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NASA's InSight Successfully Lands on Mars (theverge.com)
NASA's latest Mars lander, InSight, successfully touched down on the surface of the Red Planet moments ago, surviving an intense plunge through the Martian atmosphere. From a report: It marks the eighth picture-perfect landing on Mars for NASA, adding to the space agency's impressive track record of putting spacecraft on the planet. And now, InSight's two-year mission has begun, one that entails listening for Marsquakes to learn about the world's interior. After six and a half months of traveling through space, InSight hit the top of Mars' atmosphere a little before 3PM ET. It then made a daring descent to the surface, performing a complex multi-step routine that slowed the lander from more than 12,000 miles per hour to just 5 miles per hour before it hit the ground. To get to the surface safely, InSight had to autonomously deploy a supersonic parachute, gather radar measurements, and ignite its thrusters all at the right time. Altogether, the landing took just under seven minutes to complete, prompting the nickname "seven minutes of terror." "InSight's view is a flat, smooth expanse called Elysium Planitia, but its workspace is below the surface, where it will study Mars' deep interior," Nasa posted Monday, sharing the first photo after the landing.
Hijacking that inane comment to ask another, likely inane question.
Would it be unreasonable to assume that they have been placing sensors on these spacecraft to register the various radiation levels experienced during the trip to Mars. This seems like it would be invaluable empirical data of what those anxious to get there in person will face on the trip.
When Fascism comes to America, it will call itself Anti-Fascism, and tell you to give up your guns.
We call earthquakes earthquakes.
Yes, because they occur on the Earth.
For some reason, earthquakes on Mars are now called Marsquakes?
Well, they certainly aren't earthquakes. Perhaps they should simply be called "quakes". But earthquake is definitely not correct.
If you have to make up a word and make it a proper noun for a really fundamental effect on a science and technology news website, something is seriously wrong.
I'd say marsquake is pretty accurate. Certainly more so than earthquake. "Earthquake" is simply two words put together to describe the ground on the earth shaking. If it occurs on Mars, then to say the Earth is quaking would be very inaccurate.
New words are made up all of the time and the meaning of some words change over time as well. If you don't like it, speak Latin. It's a dead language it isn't supposed to evolve.
I'd say this has to be one of the most important missions in years in terms of space research.
This will open the doors to future Mars missions by showing the internal geometry of the planet, potentially leading to liquid water, caves for future colonies and underground chemistry.
Equally the Risk Assessment of space impacts to know for sure just how frequent they are.
But as a bonus, also a test of deep-launch cubesats, which can be used to help massively improve the Deep Space Network as well as do experiments around lesser bodies like asteroids since they are so disposable with their cheap(er) development prices.
I can only hope it doesn't go awry. It'll be crushing. Probably worse so than the Beagle2 failure.
well let's follow this to the logical conclusion: "Uranusquake" ... that won't be abused at all.
But really, there's geological phenomena that are not going to be unique to earth; coming up bespoke names for them on each planet/world we come into contact with is silly.
Why should taxpayers be saddled with more debt so the nerd class can feel good about itself.
Because without the nerd class, you'd still be driving around in a horse-and-buggy, without nifty things like mobile phones and GPS.
I am glad the NASA commentators were not constantly talking during the 7 minute landing sequence. This is how you build suspense. By not talking and letting the time flow and the suspense build. Hollywood could learn a lot by watching this NASA landing event.
Well done.
Yes, because they occur on the Earth.
No, the word earthquake goes back to the 14th century, a century before the planet was first called Earth. It means ground, not the planet.
Which is rather obvious, because the entire Earth does not quake.
Earlier this afternoon the The Council of Elders announced in triumph that they have once again detected and deflected the efforts of the blue world to land upon our soil.
K'Nord, Speaker for the Council of Elders, told reporters in a lengthy and jovial press conference
Shortly thereafter, a junior analyst in the room was overheard suggesting that the vessel was in fact designed to be stationary, and that it furthermore contained a drilling device designed to penetrate deeply into the planetary soil. Quickly reiterating the victory at hand, K'nord then had the analyst's gelsacs extracted and pulpified, to be used as a cleaning solution for the Council members' glasses.
I don't bet against NASA anymore. After Curiosity used the "Sky Crane" to land on Mars I had to sing the Star-Spangled Banner naked on the roof of an office building in Ohio. Which meant that it was just another day in Ohio, but I was certain that that thing was going to be a smoking hole in Mars...
I am not interested in articles about life extension advancements.
I liked the moment when they detected the parachute deployment from the sudden change in Doppler shift of the received signal.
The CubeSats are not in Martian orbit - they didn't have engines to slow down or a heat shield to bleed off energy (only small attitude thrusters). They just flew by Mars, and will be in an elliptical orbit around the Sun.
Oh well! Slightly less cool then, but still an interesting idea.
It looks like they won't last longer than a few weeks, after that just orbiting as you said in an elliptical orbit - it would be nice if they had planned that to just exit the solar system or hit the sun, you can't start worrying about deep space debris too early!
They do have tiny engines it appears, but just enough for small adjustments. Interesting the reason they have two was just for redundancy but it seemed both worked.
"There is more worth loving than we have strength to love." - Brian Jay Stanley
From the desk of his Imperiousness Qwerrfygrum:
"Once again, the watery inhabitants of the Third Planet have assaulted our Beloved Homeland.
25 Years ago, their attacks began, first with a suicidal crash, second with a landing that our Illustrious General Grogooglebarg (may his essences swim forever) disabled only moments after touchdown.
We have managed over these years to maintain a strong success rate, with more than half their attacks being diverted, disabled, or destroyed before tainting our Red Fundament.
Recently, some of their attack craft have landed and continued to roam. Those responsible for disabling these craft have been sequentially sacked until we've found the right Tentacle for the job! I believe I can say with confidence they have all been terminated finally.
Unfortunately, however, the grim news of another lander cannot be refuted.
The only way this could possibly get worse would be if this new attack craft actually drilled into Mother Mars, violating her sacred surface.
STAY BRAVE, MARTIANS! We will triumph!"
-Styopa
Seriously... it really does. It rings like a bell as the P and S waves travel through and around the planet. This is actually the principle that allows InSight to work. The fact that a quake is detectable anywhere because it creates vibrations of the entire planet. The Sendai, Japan quake actually altered the axis of mass of the Earth by about 6.5 inches.
InSight will watch for P, S, and surface waves (a total of 5 types in all) and use that information to figure out the original position of the quake and how the waves change from their origin will give clues as to the internal structure of the planet. Just as on Earth, earthquake waves are refracted and reflected and speed up/slow down as they travel through different mediums. It is a brilliant bit of science they are about to start in on.
Well, Merriam-Webster has an entry for moonquake. Oxford lists marsquake. The Free Dictionary has sunquake. Dictionary.com lists starquake.
While the 14th century usage may have meant something else, it's certainly well known that the entire planet Earth does in fact quake during an earthquake. Why do you think remote sensors can detect earthquakes half way around the planet? Definitions of words change over a couple of years, let alone several centuries. In this case, I'd say the term "earthquake" as in the planet is more accurate than the original definition. But it becomes problematic when you're talking about a quake on another celestial body.
I also believe the "earth", as in dirt, that was referred to in the 14th century was generally referring to cultivable topsoil. You're not going to find much of that on the moon, mars, or a star.
Because without the nerd class, you'd still be driving around in a horse-and-buggy
You wish! Without the nerd class, you wouldn't even have a wheel to put on a buggy, much less fire to keep warm.
"Someone needs to talk to the tree of liberty about its ghoulish drinking problem." by ohnocitizen