Domain: esa.int
Stories and comments across the archive that link to esa.int.
Stories · 342
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For ESA's Herschel Mission, the End Is Near
Trapezium Artist writes "The European Space Agency's far-infrared space observatory, Herschel, will soon run out of its liquid helium coolant, ending observations after more than three years of highly successful scientific operations. Predictions by ESA engineers are that Herschel will run out of helium later in March, at which point its instruments will warm up, rendering them effectively blind. Herschel was launched in 2009 along with ESA's Planck satellite to the Sun-Earth L2 point, roughly 1.5 million kilometers from Earth. At that location, the Sun and Earth remain along a more or less constant vector with respect to a spacecraft, meaning that it can cool to very low temperatures behind a sunshield. At such a large distance from Earth, however, there is no way of replenishing the coolant, and Herschel will be pushed off the L2 point to spend its retirement in a normal heliocentric orbit. With the largest monolithic mirror ever flown in space at 3.5 meters diameter and three powerful scientific instruments, Herschel has made exciting discoveries about the cool Universe, ranging from dusty starburst galaxies at high redshifts to star-forming regions spread throughout the Milky Way and proto-planetary disks of gas and dust swirling around nearby young stars. And with an archive full of data, much of it already public, Herschel is set to produce new results for years to come." -
For ESA's Herschel Mission, the End Is Near
Trapezium Artist writes "The European Space Agency's far-infrared space observatory, Herschel, will soon run out of its liquid helium coolant, ending observations after more than three years of highly successful scientific operations. Predictions by ESA engineers are that Herschel will run out of helium later in March, at which point its instruments will warm up, rendering them effectively blind. Herschel was launched in 2009 along with ESA's Planck satellite to the Sun-Earth L2 point, roughly 1.5 million kilometers from Earth. At that location, the Sun and Earth remain along a more or less constant vector with respect to a spacecraft, meaning that it can cool to very low temperatures behind a sunshield. At such a large distance from Earth, however, there is no way of replenishing the coolant, and Herschel will be pushed off the L2 point to spend its retirement in a normal heliocentric orbit. With the largest monolithic mirror ever flown in space at 3.5 meters diameter and three powerful scientific instruments, Herschel has made exciting discoveries about the cool Universe, ranging from dusty starburst galaxies at high redshifts to star-forming regions spread throughout the Milky Way and proto-planetary disks of gas and dust swirling around nearby young stars. And with an archive full of data, much of it already public, Herschel is set to produce new results for years to come." -
For ESA's Herschel Mission, the End Is Near
Trapezium Artist writes "The European Space Agency's far-infrared space observatory, Herschel, will soon run out of its liquid helium coolant, ending observations after more than three years of highly successful scientific operations. Predictions by ESA engineers are that Herschel will run out of helium later in March, at which point its instruments will warm up, rendering them effectively blind. Herschel was launched in 2009 along with ESA's Planck satellite to the Sun-Earth L2 point, roughly 1.5 million kilometers from Earth. At that location, the Sun and Earth remain along a more or less constant vector with respect to a spacecraft, meaning that it can cool to very low temperatures behind a sunshield. At such a large distance from Earth, however, there is no way of replenishing the coolant, and Herschel will be pushed off the L2 point to spend its retirement in a normal heliocentric orbit. With the largest monolithic mirror ever flown in space at 3.5 meters diameter and three powerful scientific instruments, Herschel has made exciting discoveries about the cool Universe, ranging from dusty starburst galaxies at high redshifts to star-forming regions spread throughout the Milky Way and proto-planetary disks of gas and dust swirling around nearby young stars. And with an archive full of data, much of it already public, Herschel is set to produce new results for years to come." -
For ESA's Herschel Mission, the End Is Near
Trapezium Artist writes "The European Space Agency's far-infrared space observatory, Herschel, will soon run out of its liquid helium coolant, ending observations after more than three years of highly successful scientific operations. Predictions by ESA engineers are that Herschel will run out of helium later in March, at which point its instruments will warm up, rendering them effectively blind. Herschel was launched in 2009 along with ESA's Planck satellite to the Sun-Earth L2 point, roughly 1.5 million kilometers from Earth. At that location, the Sun and Earth remain along a more or less constant vector with respect to a spacecraft, meaning that it can cool to very low temperatures behind a sunshield. At such a large distance from Earth, however, there is no way of replenishing the coolant, and Herschel will be pushed off the L2 point to spend its retirement in a normal heliocentric orbit. With the largest monolithic mirror ever flown in space at 3.5 meters diameter and three powerful scientific instruments, Herschel has made exciting discoveries about the cool Universe, ranging from dusty starburst galaxies at high redshifts to star-forming regions spread throughout the Milky Way and proto-planetary disks of gas and dust swirling around nearby young stars. And with an archive full of data, much of it already public, Herschel is set to produce new results for years to come." -
Over the Antarctic, the Smallest Ozone Hole In a Decade
hypnosec writes "The ozone layer seems to be on a road to recovery over Antarctica; according to Europe's MetOp weather satellite, which is monitoring atmospheric ozone, the hole over the South Pole in 2012 was the smallest it's been in the last 10 years. The decrease in size of the hole is probably the result of reduction in the concentration of CFCs, especially since the mid-1990s, because of international agreements like the Montreal Protocol." -
Nearby Star Could Host a Baby Solar System
astroengine writes "With the help of Europe's Herschel Space Observatory and the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, a team of astronomers have made a lucky discovery about TW Hydrae, the nearest star to the solar system that plays host to a protoplanetary disk. Not only have they gained a more precise estimate of the mass of the material inside the protoplanetary disk, they've also found that it may produce a system of worlds similar to that of the solar system. TW Hydrae may look like the solar system did over 4 billion years ago (abstract). Interestingly, TW Hydrae is also a star that would normally be considered too mature to host a protoplanetary disk. "If there's no chance your project can fail, you're probably not doing very interesting science. TW Hydrae is a good example of how a calculated scientific gamble can pay off," said Thomas Henning, of the Max Planck Institute for Astronomy in Heidelberg." -
Mars' Reull Vallis: a River Ran Through It
Press2ToContinue sends this quote from a European Space Agency news release: "ESA's Mars Express imaged the striking upper part of the Reull Vallis region of Mars with its high-resolution stereo camera last year. Reull Vallis, the river-like structure in these images, is believed to have formed when running water flowed in the distant martian past, cutting a steep-sided channel through the Promethei Terra Highlands before running on towards the floor of the vast Hellas basin. This sinuous structure, which stretches for almost 1500 km across the martian landscape, is flanked by numerous tributaries, one of which can be clearly seen cutting in to the main valley towards the upper (north) side." -
Mars' Reull Vallis: a River Ran Through It
Press2ToContinue sends this quote from a European Space Agency news release: "ESA's Mars Express imaged the striking upper part of the Reull Vallis region of Mars with its high-resolution stereo camera last year. Reull Vallis, the river-like structure in these images, is believed to have formed when running water flowed in the distant martian past, cutting a steep-sided channel through the Promethei Terra Highlands before running on towards the floor of the vast Hellas basin. This sinuous structure, which stretches for almost 1500 km across the martian landscape, is flanked by numerous tributaries, one of which can be clearly seen cutting in to the main valley towards the upper (north) side." -
Mars' Reull Vallis: a River Ran Through It
Press2ToContinue sends this quote from a European Space Agency news release: "ESA's Mars Express imaged the striking upper part of the Reull Vallis region of Mars with its high-resolution stereo camera last year. Reull Vallis, the river-like structure in these images, is believed to have formed when running water flowed in the distant martian past, cutting a steep-sided channel through the Promethei Terra Highlands before running on towards the floor of the vast Hellas basin. This sinuous structure, which stretches for almost 1500 km across the martian landscape, is flanked by numerous tributaries, one of which can be clearly seen cutting in to the main valley towards the upper (north) side." -
Galileo: Europe's Version of GPS Reaches Key Phase
another random user sends this quote from the BBC: "The third and fourth spacecraft in Europe's satellite navigation system have gone into orbit. The pair were launched on a Russian Soyuz rocket from French Guiana. It is an important milestone for the multi-billion-euro project to create a European version of the U.S. Global Positioning System. With four satellites now in orbit — the first and second spacecraft were launched in 2011 — it becomes possible to test Galileo end-to-end. That is because a minimum of four satellites are required in the sky for a smartphone or vehicle to use their signals to calculate a positional fix." -
Europe Sets Sights On Asteroid Tracking Radars
coondoggie writes "The European Space Agency today said it would develop a radar system that will be capable of tracking space hazards such as asteroids and orbital debris. ESA and France's Office National d'Etudes et Recherches Aérospatiales research center will work with five other partners in France, Spain and Switzerland to this month design a test surveillance radar and develop a $6 million demonstrator model." -
ESA Summer of Code In Space 2012
phyr writes "The European Space Agency is looking for student coders to join the Summer of Code in Space. ESA will pay 4000 Euros to each student for contributing to a space related open source project for the summer. Accepted student applicants are paired with a mentor from the participating projects, thus gaining exposure to real-world software development scenarios. Mentor organizations have been selected. Students now have until July 27 to submit their applications. Check out the ideas pages of each project such as for the NEST SAR Toolbox" -
ESA Summer of Code In Space 2012
phyr writes "The European Space Agency is looking for student coders to join the Summer of Code in Space. ESA will pay 4000 Euros to each student for contributing to a space related open source project for the summer. Accepted student applicants are paired with a mentor from the participating projects, thus gaining exposure to real-world software development scenarios. Mentor organizations have been selected. Students now have until July 27 to submit their applications. Check out the ideas pages of each project such as for the NEST SAR Toolbox" -
ESA Announces the Summer of Code In Space 2012
New submitter juli1 writes "The European Space Agency announced the second edition of the Summer Of Code In Space (SOCIS2012), a similar initiative to the Google Summer of Code but more related to space software. The goal is to support students in contributing to open source projects that are connected to the space domain. Students' contribution is reviewed by selected mentoring organizations and likely reversed to the main branch of each project. According to the time-line, mentoring organizations can apply now and accepted students would start their projects beginning of August and write code until October. Upon successful completion of the program, students will receive 4000 euros." -
ESA Announces the Summer of Code In Space 2012
New submitter juli1 writes "The European Space Agency announced the second edition of the Summer Of Code In Space (SOCIS2012), a similar initiative to the Google Summer of Code but more related to space software. The goal is to support students in contributing to open source projects that are connected to the space domain. Students' contribution is reviewed by selected mentoring organizations and likely reversed to the main branch of each project. According to the time-line, mentoring organizations can apply now and accepted students would start their projects beginning of August and write code until October. Upon successful completion of the program, students will receive 4000 euros." -
ESA Declares Flagship Envisat Observing Satellite Lost
An anonymous reader writes with news that the European Space Agency has lost contact with its Envisat environmental satellite mere weeks after celebrating a full decade in orbit. Engineers have spent the last month trying to re-establish contact, and will continue to do so for another two months. "With ten sophisticated sensors, Envisat has observed and monitored Earth’s land, atmosphere, oceans and ice caps during its ten-year lifetime, delivering over a thousand terabytes of data. An estimated 2500 scientific publications so far have been based on this information, furthering our knowledge of the planet." The ESA was hoping Envisat would stay operational for another two years, until Sentinel satellites from the Global Monitoring for Environment and Security initiative became operational. -
Fomalhaut's Exoplanets Have Orbits That Defy Theory
astroengine writes "Astronomers believe they have found a second distant planet around Fomalhaut, a bright young neighbor star, and that the far-out world — like its sister planet — is shepherding and shaping the star's ring of dust. If confirmed, theorists have some work to do explaining how the planet, believed to be a few times bigger than Mars, ended up 155 times as far away from its parent star as Earth is to the sun. 'We're learning a lot about planets that are close to their stars, but that is not the full picture. We also want to know about systems where planets are very far out. By considering near-, far- and mid-range, we can get a complete picture of planet formation,' University of Florida astronomer Aaron Boley said." There was another fascinating bit of news about Fomalhaut a few days ago: "ESA’s Herschel Space Observatory has studied the dusty belt around the nearby star Fomalhaut. The dust appears to be coming from collisions that destroy up to thousands of icy comets every day." -
ESA's Vega Launcher Has Successful Maiden Flight
Zothecula writes "The European Space Agency's new Vettore Europeo di Generazione Avanzata — or Vega — launch vehicle lifted off from Europe's Spaceport in Kourou, French Guiana, at 10 a.m. GMT on February 13 on its maiden flight. Designed for launching small payloads, Vega is intended to complement Europe's existing family of launchers that includes the Ariane 5 heavy-lifter and Soyuz medium-class launchers. The qualification flight, designated VV01, saw the first Vega successfully carry nine satellites into orbit." -
ESA Discovers Unexpected 'Haze' of Microwave Transmissions
astroengine writes "The European space observatory Planck has discovered something peculiar about our galaxy: it's humming in microwaves and, for the moment, the source of the 'hard' radiation surrounding the galaxy's core is a complete mystery. Also, the Milky Way is home to previously unknown 'islands' of cold carbon monoxide gas, helping astronomers uncover the distribution of star-forming regions." -
NASA Pulling Out of ESA-led ExoMars Mission?
astroengine writes "It's a strange irony that to afford the expense of space exploration, international collaboration is often sought after — spreading the cost across several international partners means the biggest space missions may be accomplished. And yet in times of austerity, national budgets balk at the prospect of investing in international projects like ExoMars. Sadly, that's exactly what could be facing the ambitious ESA-led Mars rover/satellite mission if NASA's Science Mission Directorate budget is slashed in the next financial year. NASA may pull out of the project, leaving ExoMars with no rockets or a means to actually land on Mars. Could Russia help out? Possibly, but it will still lead to ESA taking on more cost than it has budgeted for." -
Simulated Mars Mission 'Returns' After 520 Days
On June 3, 2010, a team of six volunteers began the Mars500 experiment: they were locked into a cluster of hermetically sealed habitat modules for the duration of a simulated mission to Mars lasting 520 days. "During the ‘flight,' the crew performed more than 100 experiments, all linked to the problems of long-duration missions in deep space. To add to their isolation, communications with mission control were artificially delayed to mimic the natural delays over the great distances on a real Mars flight." The simulated mission has now come to an end. The crew managed to stay healthy and sane, and they've emerged from isolation to be reunited with their families. The ESA's Mars500 page has further details on the experiment, and they've posted a video summarizing the 'trip.' -
Simulated Mars Mission 'Returns' After 520 Days
On June 3, 2010, a team of six volunteers began the Mars500 experiment: they were locked into a cluster of hermetically sealed habitat modules for the duration of a simulated mission to Mars lasting 520 days. "During the ‘flight,' the crew performed more than 100 experiments, all linked to the problems of long-duration missions in deep space. To add to their isolation, communications with mission control were artificially delayed to mimic the natural delays over the great distances on a real Mars flight." The simulated mission has now come to an end. The crew managed to stay healthy and sane, and they've emerged from isolation to be reunited with their families. The ESA's Mars500 page has further details on the experiment, and they've posted a video summarizing the 'trip.' -
Simulated Mars Mission 'Returns' After 520 Days
On June 3, 2010, a team of six volunteers began the Mars500 experiment: they were locked into a cluster of hermetically sealed habitat modules for the duration of a simulated mission to Mars lasting 520 days. "During the ‘flight,' the crew performed more than 100 experiments, all linked to the problems of long-duration missions in deep space. To add to their isolation, communications with mission control were artificially delayed to mimic the natural delays over the great distances on a real Mars flight." The simulated mission has now come to an end. The crew managed to stay healthy and sane, and they've emerged from isolation to be reunited with their families. The ESA's Mars500 page has further details on the experiment, and they've posted a video summarizing the 'trip.' -
Galileo To Be Europe's Answer To US GPS
judgecorp writes "Two Galileo satellites that will signify the start of the European Union's answer to the American Global Positioning System will be launched into orbit on Thursday aboard a Russian Soyuz rocket. It's using Soyuz because it is cheaper than the French Ariane — and the satellite system is supposed to free Europe from dependence on a U.S.-controlled positioning system." -
Satellite Captures Burning Man From Space
MikeCapone writes "A European Space Agency satellite has captured what has become one of modern society's most hedonistic adventures: Burning Man. Taken about 400 miles up, the picture shows Black Rock City in full swing along with all of its 50,000-something attendees. ESA compiled the photograph using four photos, each with a resolution of about 16 feet. " The ESA has a high resolution version of the image available. -
Satellite Captures Burning Man From Space
MikeCapone writes "A European Space Agency satellite has captured what has become one of modern society's most hedonistic adventures: Burning Man. Taken about 400 miles up, the picture shows Black Rock City in full swing along with all of its 50,000-something attendees. ESA compiled the photograph using four photos, each with a resolution of about 16 feet. " The ESA has a high resolution version of the image available. -
Construction of ESA Galaxy Mapping Satellite Completed
coondoggie writes with an article in Network World. From the article: "The European Space Agency says it has completed what it calls the largest digital camera ever built for a space mission — a one billion pixel array camera that will help create a three-dimensional picture of the Milky Way Galaxy. Set to be launched onboard the ESA's galaxy-mapping Gaia mission in 2013, the digital camera was 'mosaicked together from 106 separate electronic detectors.' ESA says that Gaia's measurements will be so accurate that, if it were on Earth, it could measure the thumbnails of a person on the Moon." -
ESA Opens To Open Source Code Development
An anonymous reader writes "The European Space Agency just announced its SOCIS (Summer Of Code In Space) pilot project. The project is modeled after Google's Summer of Code (GSoC) initiative but is targeted to 'space related' open source software. Quite good stipends are given to student developing code during this summer." -
ESA Opens To Open Source Code Development
An anonymous reader writes "The European Space Agency just announced its SOCIS (Summer Of Code In Space) pilot project. The project is modeled after Google's Summer of Code (GSoC) initiative but is targeted to 'space related' open source software. Quite good stipends are given to student developing code during this summer." -
Europe Set To Build Experimental Transport Spacecraft
coondoggie writes "Looking to take a giant step toward taking part in low Earth orbit transportation, exploration and servicing of orbiting space structures, the European Space Agency today said it would team with Thales Alenia Space Italia to begin building an experimental spacecraft for launch in 2013. 'The 2t lifting body will attain an altitude of around 450 km, allowing it to reach a velocity of 7.5 km/s on entering the atmosphere. It will collect a large amount of data (PDF) during its hypersonic and supersonic flight, while it is being controlled by thrusters and aerodynamic flaps.'" -
Earth's Gravitational Shape In Detail
RobHart writes "The European Space Agency (ESA) has released detailed information about the Earth's gravitational shape, based on data from the ESA's GOCE satellite (Gravity Field and Steady-State Ocean Circulation Explorer). The link includes an interesting animation of the data, using an appropriately distorted Earth." -
Russian Simulated Mars Mission Close To 'Landing'
Dthief writes with this quote from an Associated Press report: "After 233 days in a locked steel capsule, six researchers on a 520-day mock flight to Mars are all feeling strong and ready to 'land' on the Red Planet, the mission director said Friday. The all-male crew of three Russians, a Chinese, a Frenchman and an Italian-Colombian has been inside windowless capsules at a Moscow research center since June. Their mission aims to help real space crews in the future cope with the confinement and stress of interplanetary travel. The researchers communicate with the outside world via emails and video messages — occasionally delayed to give them the feel of being farther than a few yards away from mission control. The crew members eat canned food similar to that eaten on the International Space Station and shower only once a week. None of the men has considered abandoning the mission, although they are free to walk out at any time, mission director and former cosmonaut Boris Morukov told reporters on Friday." -
Arms Regulations Damaging US Space Industry
athe!st writes "International Traffic in Arms Regulations (ITAR) are a major headache for companies trying to put their satellites into space, so much so that some companies are using 'ITAR-free' (aka free of US technology) as a selling point. The European Space Agency is trying to reduce its dependence on ITAR components, and the regulations are also threatening the nascent space tourism industry." -
ESA Releases Lutetia Flyby Images
The European Space Agency has released images from yesterday's close approach of asteroid 21 Lutetia by the Rosetta probe. At its closest, the probe was a mere 3,162 km from the asteroid, passing at 15 km/s and snapping photos sharp enough to make out features as small as 60 meters. "Rosetta operated a full suite of sensors at the encounter, including remote sensing and in-situ measurements. Some of the payload of its Philae lander were also switched on. Together they looked for evidence of a highly tenuous atmosphere, magnetic effects, and studied the surface composition as well as the asteroid’s density. ... The flyby marks the attainment of one of Rosetta's main scientific objectives. The spacecraft will now continue to a 2014 rendezvous with its primary target, comet Churyumov-Gerasimenko. It will then accompany the comet for months, from near the orbit of Jupiter down to its closest approach to the Sun. In November 2014, Rosetta will release Philae to land on the comet nucleus." There is also a replay of the media event webcast on the ESA's website. -
ESA Releases Lutetia Flyby Images
The European Space Agency has released images from yesterday's close approach of asteroid 21 Lutetia by the Rosetta probe. At its closest, the probe was a mere 3,162 km from the asteroid, passing at 15 km/s and snapping photos sharp enough to make out features as small as 60 meters. "Rosetta operated a full suite of sensors at the encounter, including remote sensing and in-situ measurements. Some of the payload of its Philae lander were also switched on. Together they looked for evidence of a highly tenuous atmosphere, magnetic effects, and studied the surface composition as well as the asteroid’s density. ... The flyby marks the attainment of one of Rosetta's main scientific objectives. The spacecraft will now continue to a 2014 rendezvous with its primary target, comet Churyumov-Gerasimenko. It will then accompany the comet for months, from near the orbit of Jupiter down to its closest approach to the Sun. In November 2014, Rosetta will release Philae to land on the comet nucleus." There is also a replay of the media event webcast on the ESA's website. -
ESA Releases Lutetia Flyby Images
The European Space Agency has released images from yesterday's close approach of asteroid 21 Lutetia by the Rosetta probe. At its closest, the probe was a mere 3,162 km from the asteroid, passing at 15 km/s and snapping photos sharp enough to make out features as small as 60 meters. "Rosetta operated a full suite of sensors at the encounter, including remote sensing and in-situ measurements. Some of the payload of its Philae lander were also switched on. Together they looked for evidence of a highly tenuous atmosphere, magnetic effects, and studied the surface composition as well as the asteroid’s density. ... The flyby marks the attainment of one of Rosetta's main scientific objectives. The spacecraft will now continue to a 2014 rendezvous with its primary target, comet Churyumov-Gerasimenko. It will then accompany the comet for months, from near the orbit of Jupiter down to its closest approach to the Sun. In November 2014, Rosetta will release Philae to land on the comet nucleus." There is also a replay of the media event webcast on the ESA's website. -
Two ESA Craft To Observe Asteroid 21 Lutetia
japan_dan writes "Two ESA spacecraft will observe 21 Lutetia during Rosetta's flyby on 10 July: Rosetta from 3,160 km and Herschel from 450 million km. Herschel's PACS and SPIRE spectrometers will view Lutetia in far infrared, while Rosetta will gather data in a variety of wavelengths. Since the observations will be coordinated during and at closest approach, scientists will later be able to correlate the data to produce a map of the thermal radiation emitted by Lutetia. There are a pair of animations modelling the expected temperature distribution over Lutetia at the link. The joint observations are part of a series of 8 sessions planned in the next couple of years by Herschel scientists to study objects that will be visited by spacecraft." -
First Full-Sky Image From Planck Mission
krou writes "Six months of work has produced a remarkable full-sky map from Planck. 'It shows what is visible beyond the Earth to instruments that are sensitive to light at very long wavelengths — much longer than what we can sense with our eyes. Researchers say it is a remarkable dataset that will help them understand better how the Universe came to look the way it does now. ... Of particular note are the huge streamers of cold dust that reach thousands of light-years above and below the galactic plane. "What you see is the structure of our galaxy in gas and dust, which tells us an awful lot about what is going on in the neighborhood of the Sun; and it tells us a lot about the way galaxies form when we compare this to other galaxies," observed Professor Andrew Jaffe, a Planck team member from Imperial College London, UK.' The ESA has more details on their website, with a higher-res JPG available." -
First Full-Sky Image From Planck Mission
krou writes "Six months of work has produced a remarkable full-sky map from Planck. 'It shows what is visible beyond the Earth to instruments that are sensitive to light at very long wavelengths — much longer than what we can sense with our eyes. Researchers say it is a remarkable dataset that will help them understand better how the Universe came to look the way it does now. ... Of particular note are the huge streamers of cold dust that reach thousands of light-years above and below the galactic plane. "What you see is the structure of our galaxy in gas and dust, which tells us an awful lot about what is going on in the neighborhood of the Sun; and it tells us a lot about the way galaxies form when we compare this to other galaxies," observed Professor Andrew Jaffe, a Planck team member from Imperial College London, UK.' The ESA has more details on their website, with a higher-res JPG available." -
ESA's GOCE Satellite Provides Gravity Map of Earth
kaulike writes "The European Space Agency's GOCE satellite, launched in March 2009, has provided a spectacular, highly detailed map of our favorite gravity well. This map shows the normalized surface of the earth as defined by gravity, showing the relative altitude differences from the average for each surveyed point. The article provides the helpful metaphor that a ball resting on this surface would not roll anywhere, even though there would be visual slopes, as gravity is equalized across the globe. There is a fascinating deep area in the Indian ocean (-100M) and a high area near Iceland (+80M), proving conclusively that our world is not homogeneous in terms of density (or practically any other measure). Does anyone know whether these anomalies correspond to known geographic phenomena? Deposits of heavy metals perhaps, or hotspots where the mantle is thinner? I know little about geodetic stuff, but I'm curious about the reasons for wrinkles in the data set." -
First Full Science Results From Herschel
davecl writes "Today the first full science results from the Herschel Space Observatory were released, including results ranging from the formation and evolution of galaxies to the detailed physics of star formation. Details can be found from The European Space Agency, the BBC, and the Herschel mission blog that I help maintain. Briefer reports, covering rather more of the science, can also be found under the #eslab2010 hashtag on Twitter." -
Planck Mission Releases Images of Galactic Dust
davecl writes "The Planck satellite has released its first new science images, showing the large scale filamentary structure of cold dust in our own galaxy. This release coincides with the completion of its first survey of the entire sky a couple of weeks ago. There's lots more work to be done, and more observations to be made, before results are ready on the Big Bang, but these images demonstrate Planck's performance and capability. More information is available on the Planck mission blog (which I maintain)." -
Attack of the Killer Electrons
Hugh Pickens writes "At the peak of a magnetic storm, the number of highly energetic 'killer electrons' strong enough to damage electronics and human tissue can increase by a factor of more than ten times, posing a danger to spacecraft, satellites, and astronauts. Killer electrons can penetrate satellite shielding, so if electrical discharges take place in vital components, a satellite can be damaged or even rendered inoperable. For many years, the mechanism by which killer electrons are produced has remained poorly understood, in spite of physicists' attempts at solving this puzzle. Now the ESA reports that data shows the increase in the creation of a substantial number of killer electrons is due to a two-step process. First, the initial acceleration is due to the strong shock-related magnetic field compression. Immediately after the impact of the interplanetary shock wave, Earth's magnetic field lines began wobbling at ultra low frequencies. In turn, these ULF waves effectively accelerate the seed electrons (provided by the first step) to become killer electrons. 'These new findings help us to improve the models predicting the radiation environment in which satellites and astronauts operate. With solar activity now ramping up, we expect more of these shocks to impact our magnetosphere over the months and years to come,' says Philippe Escoubet, ESA's Cluster mission manager." -
Amateur Records the "Sound" of Mars Express
gyrogeerloose writes "A French amateur radio operator who built his own ground station using equipment from an abandoned telecom uplink site has listened in on the ESA's Mars Express space probe. While his antenna is too small to allow him to download actual data, he was able to record and convert the signal of the probe's X-Band transmitter into an audio file." -
International Space Station Cupola Video Released
quaith writes "With the Space Shuttle Endeavour scheduled to launch at 4:39 AM EST on Sunday for a trip to the International Space Station, the European Space Agency has released a video that shows how the modules it's carrying — Node-3 ('Tranquility') and Cupola — are going to get attached. Node-3 is a connecting module. Cupola has six trapezoidal windows and circular roof designed to provide a unique vantage-point for observing Earth. The video animations show how the station's robotic arm will be used initially to put the modules in place as a single unit, and then to detach Cupola from the end of Node-3 and reattach it on the Earth-facing side. With this addition, the ISS will start to look like something that Jules Verne would have wanted to visit." -
ESA Conducts Mars Terraforming Experiments On ISS
geegel writes "Space is a hostile environment for living things, but small organisms on the Expose-E experiment unit outside Europe's Columbus ISS laboratory module have resisted the solar UV radiation, cosmic rays, vacuum and varying temperatures for 18 months. A certain lichen seems to be particularly happy in open space." -
Herschel's First Science Results, Eagle Nebula
davecl writes "Over the next three days, many new science results will come out from Herschel. The first of these, a view deep inside the stellar nursery of the Eagle Nebula, finds a huge amount of activity, revealing new stars and filaments of dust that could not have been detected by previous telescopes. Also open today is OSHI, the online showcase of Herschel images where all the new science images will be found. Herschel news also available on the Herschel Mission Blog." -
Herschel's First Science Results, Eagle Nebula
davecl writes "Over the next three days, many new science results will come out from Herschel. The first of these, a view deep inside the stellar nursery of the Eagle Nebula, finds a huge amount of activity, revealing new stars and filaments of dust that could not have been detected by previous telescopes. Also open today is OSHI, the online showcase of Herschel images where all the new science images will be found. Herschel news also available on the Herschel Mission Blog." -
Mars Express Captures Phobos and Deimos
westtxfun writes "The Mars Express Orbiter captured a very cool movie of Phobos and Deimos on Nov 5. Besides the 'wow factor,' the images will be used to refine models of the moons' orbits. The orbiter has also captured high resolution images of Phobos back in July. 'The images were acquired with the Super Resolution Channel (SRC) of the High Resolution Stereo Camera (HRSC). The camera took 130 images of the moons on 5 November at 9:14 CET in a span of 1.5 minutes at intervals of 1s, speeding up to 0.5-s intervals toward the end. The image resolution is 110 m/pixel for Phobos and 240 m/pixel for Deimos — Deimos was more than twice as far from the camera. '" -
ISS Can Now Watch Sea Traffic From Space
gyrogeerloose writes "During its last mission, astronauts from the Space Shuttle Atlantis installed an Automatic Identification System antenna on the outside of the International Space Station that will allow astronauts aboard the ISS to monitor signals from the AIS transmitters mandated to be installed on most large ocean-going craft. Although these VHF signals can be monitored from the Earth's surface, their horizontal range is generally limited to about 75 km (46 mi), leaving large areas of the ocean unwatched. However, the signals easily reach the 400 km (250 mi) orbit of the ISS. The European Space Agency sees this experiment as a test platform for a future AIS-monitoring fleet of satellites that will eventually provide worldwide coverage of sea traffic."