Actually Gaia will map 1% of the stars, but a substantial (my guesstimate ~50%) volume of the region containing most of the stars, which will allow to map the principal structures of the Galaxy: its spiral arms and its stellar bar, as well as to constrain the distribution of dark matter. It is comparable to study one object, like the sun, to better understand all the stars; Gaia will map one galaxy well, ours, with the aim to better understand all spiral galaxies.
In fact Gaia is sufficiently sensitive that General Relativity light deflection due to the sun and planets must be taken into account in all directions!
Life is an out-of-thermal equilibrium process, which needs the cold part of the universe to export the produced entropy necessary for sustaining life. Life does not really needs solar *energy* (otherwise earth would warm up). Actually the energy of the low entropy photons of the sun is transformed and radiated away in cold space as more numerous infrared photons. No energy is gained in average, the precise amount of solar energy received from the sun is radiated away into space, but entropy is exported. This entropy export is crucial for allowing life. Incidentally this explains why life does not respect the second principle of thermodynamics since the biosphere is not in thermal equilibrium.
Once this understood, the scenario of the cosmologists appears completely flawed, as the cold part of the process is missing.
The US spends almost as much money for defence (that is, attack) that the rest of the world. A few wars here and there are necessary to demonstrate the money has been well invested and the effort needs to be continued.
Did I say they were not aware? To me the authors look amateurish because checking stability is rather trivial once you know how to integrate ordinary differential equations.
The other aspect that should be said is that in such hamiltonian systems periodic orbits are dense in phase space, but most of them are unstable. So actually one should expect an infinity of such orbits, most of them are not interesting for practical applications. So the minimum the authors could have checked stability before publishing rather unsurprising results.
The authors do not check the stability of the found peridioc orbits, which is a necessary condition for expecting such orbits in nature. When stable nearby orbits diverge typically linearly in time and stay similar to the periodic solution (like the planets in the solar system stay close to elliptic orbits), while when unstable the divergence is exponential and quickly the 3 bodies are widely separated.
If Canonical becomes that much unfriendly, some users will be encouraged to setup a light daemon generating a multiple of random queries for each real ones. Then Canonical will try to filter out the noise, and the escalation with more clever scripts inundating their servers with trash will continue:)
Swissair was liquidated in March 2002. Its successor, Swiss International Air Line, was taken over by the German airline Lufthansa in 2005.
Also the choice of Switzerland government as main actor seems extremely bizarre to whoever knows a bit how Switzerland works. The private Swiss banks do cultivate secrecy, not the government (the Swiss secret services are rather amateurish). A highly decentralized and democratic state like Switzerland makes any coordinated, well prepared and secret operation of this kind very difficult. Further, the motivation for planning such an operation, to colonize space in case of emergency, is beyond ridiculous.
The Earth-Moon system is approximately stationnary in a particular rotating frame, not an inertial frame. In such a non-inertial frame the centrifugal and Coriolis forces must be added to gravitational force. At the Lagrange stationnary points velocity is zero so the Coriolis force vanishes, and only the centrifugal force adds a contribution to the force balance opposed to the gravity force.
Indeed, I have no clear idea, because once an object is located at one of the five Lagrangian points L1-5, very little energy is required to go to any other one. L1 needs however the least delta-v to be reached from Earth or Moon, and direct radio communications are possible with L1 and L3, contrary to L2 which is hidden by the Moon from Earth. L3, on the side opposed to the Moon would require still a bit more delta-v than L2. L1-3 are dynamically unstable, so a station there would need periodic corrections.
L4 and L5 are more stable than L1 or L2 but require still a bit more delta-v wrt L1-3.
To reach Mars, or any escape from the Earth-Moon system L1_5 are almost equivalent if enough time is available, but L4-5 provide more orbit choice, so more possibilities to choose quick routes.
Note that the station would not need to be located precisely at one of the L1-5 points, but could be on so called halo orbits circling around such a point.
Of course confirmed world class cryptographers might think twice before showing what they can do, especially if they are hired by national labs to do precisely this.
Kaspersky Lab's request might also be an easy cover to discover new talents in the field.
Let us remind that while the Higgs boson to some extent "explains" the mass of the heavy particle sector (quarks, thus protons and neutrons), the Higgs boson sheds no light on the mass of neutrinos, nor on the mass of the expected dark matter particles. Also the particular value of the Higgs mass remains a natural constant escaping explanation.
People strongly involved in religion always let me this strange impression that they are hiding something, as unable to really disclose what they think.
I wonder why nowadays they use an incrementing limited integer number (SCN), subject to the described bugs, instead of a worldwide consistent and unlimited number like the TIME. The synchronization of the databases respective times can always occur with the NTP service (http://en.wikipedia.org/wiki/Network_Time_Protocol).
In an interview with the New Scientist magazine to mark his 70th birthday on Sunday, January 8, he was asked: "What do you think most about during the day?" to which he replied: "Women. They are a complete mystery."
For optical astronomy (that is in visible, near-infrared light) the long winter nights are good for observing objects continuously 24/24 as long as non-cloudy sky permits. Of course the converse occurs in summer when darkness doesn't exist for months. Polar auroras are also a nuisance.
Linux based WebOS is going to be free, as HP announced yesterday, and Ubuntu has been installed on the Touchpad already. In the US Touchpads can be purchased for low price, like $99 on eBay. Outside the US some (for example me) got one for low price through Amazon.
In the linked article I didn't find that "only three" such antennae exist. The deep space network made of three big antennae is able to follow and control Voyager without interruption, but other isolated and big antennae exist and might be used to perturb the spacecrafts, probably with slight modifications.
Germany has a 100 m radiotelescope (Effelsberg), UK a 76m one (Jodrell Bank), Australia a 64 m one (Parkes), and China builds a 300m equivalent one, FAST, to be ready in 2013 (http://en.wikipedia.org/wiki/Five_hundred_meter_Aperture_Spherical_Telescope).
Like for cars, deaths are just a part of the bill. To make a proper economic risk evaluation all the costs must be included. I am sure this has been done, but the only rational for not insuring nuclear power plants is that it would not be economically competitive.
Other costs that would make NE not competitive is the dismantling costs, and the waste management costs (100'000 yr is long...). Recently Germany started to redo the evaluation cost for dismantling the closed plants to find that a more accurate estimate is an order of magnitude higher. The same for the Superphenix breeder in France.
Slashdot Mirror
Actually Gaia will map 1% of the stars, but a substantial (my guesstimate ~50%) volume of the region containing most of the stars, which will allow to map the principal structures of the Galaxy: its spiral arms and its stellar bar, as well as to constrain the distribution of dark matter. It is comparable to study one object, like the sun, to better understand all the stars; Gaia will map one galaxy well, ours, with the aim to better understand all spiral galaxies.
In fact Gaia is sufficiently sensitive that General Relativity light deflection due to the sun and planets must be taken into account in all directions!
Life is an out-of-thermal equilibrium process, which needs the cold part of the universe to export the produced entropy necessary for sustaining life. Life does not really needs solar *energy* (otherwise earth would warm up). Actually the energy of the low entropy photons of the sun is transformed and radiated away in cold space as more numerous infrared photons. No energy is gained in average, the precise amount of solar energy received from the sun is radiated away into space, but entropy is exported. This entropy export is crucial for allowing life.
Incidentally this explains why life does not respect the second principle of thermodynamics since the biosphere is not in thermal equilibrium.
Once this understood, the scenario of the cosmologists appears completely flawed, as the cold part of the process is missing.
The US spends almost as much money for defence (that is, attack) that the rest of the world. A few wars here and there are necessary to demonstrate the money has been well invested and the effort needs to be continued.
Interestingly the set does contain Polonium 210, used by secrete services for discrete poisoning (Alexander Litvinenko, Yasser Arafat).
http://en.wikipedia.org/wiki/Polonium/
The original press release points to a fully different topic paper.
A better link is http://adsabs.harvard.edu/abs/2013arXiv1307.5711R/
Did I say they were not aware? To me the authors look amateurish because checking stability is rather trivial once you know how to integrate ordinary differential equations.
The other aspect that should be said is that in such hamiltonian systems periodic orbits are dense in phase space, but most of them are unstable. So actually one should expect an infinity of such orbits, most of them are not interesting for practical applications. So the minimum the authors could have checked stability before publishing rather unsurprising results.
The authors do not check the stability of the found peridioc orbits, which is a necessary condition for expecting such orbits in nature. When stable nearby orbits diverge typically linearly in time and stay similar to the periodic solution (like the planets in the solar system stay close to elliptic orbits), while when unstable the divergence is exponential and quickly the 3 bodies are widely separated.
If Canonical becomes that much unfriendly, some users will be encouraged to setup a light daemon generating a multiple of random queries for each real ones. Then Canonical will try to filter out the noise, and the escalation with more clever scripts inundating their servers with trash will continue :)
Swissair was liquidated in March 2002. Its successor, Swiss International Air Line, was taken over by the German airline Lufthansa in 2005.
Also the choice of Switzerland government as main actor seems extremely bizarre to whoever knows a bit how Switzerland works. The private Swiss banks do cultivate secrecy, not the government (the Swiss secret services are rather amateurish). A highly decentralized and democratic state like Switzerland makes any coordinated, well prepared and secret operation of this kind very difficult. Further, the motivation for planning such an operation, to colonize space in case of emergency, is beyond ridiculous.
The Earth-Moon system is approximately stationnary in a particular rotating frame, not an inertial frame. In such a non-inertial frame the centrifugal and Coriolis forces must be added to gravitational force. At the Lagrange stationnary points velocity is zero so the Coriolis force vanishes, and only the centrifugal force adds a contribution to the force balance opposed to the gravity force.
>My question is why L2 and not L1?
Indeed, I have no clear idea, because once an object is located at one of the five Lagrangian points L1-5, very little energy is required to go to any other one.
L1 needs however the least delta-v to be reached from Earth or Moon, and direct radio communications are possible with L1 and L3, contrary to L2 which is hidden by the Moon from Earth. L3, on the side opposed to the Moon would require still a bit more delta-v than L2. L1-3 are dynamically unstable, so a station there would need periodic corrections.
L4 and L5 are more stable than L1 or L2 but require still a bit more delta-v wrt L1-3.
To reach Mars, or any escape from the Earth-Moon system L1_5 are almost equivalent if enough time is available, but L4-5 provide more orbit choice, so more possibilities to choose quick routes.
Note that the station would not need to be located precisely at one of the L1-5 points, but could be on so called halo orbits circling around such a point.
Between zero and full risk sharing, are you able to imagine *partial* risk sharing?
Of course confirmed world class cryptographers might think twice before showing what they can do, especially if they are hired by national labs to do precisely this.
Kaspersky Lab's request might also be an easy cover to discover new
talents in the field.
Let us remind that while the Higgs boson to some extent "explains" the mass of the heavy particle sector (quarks, thus protons and neutrons), the Higgs boson sheds no light on the mass of neutrinos, nor on the mass of the expected dark matter particles.
Also the particular value of the Higgs mass remains a natural constant escaping explanation.
People strongly involved in religion always let me this strange impression that they are hiding something, as unable to really disclose what they think.
Yes but not the synchronization. The computer clock does have a much higher resolution. Also a local atomic clock precision can be obtained with GPS.
I wonder why nowadays they use an incrementing limited integer number (SCN), subject to the described bugs, instead of a worldwide consistent and unlimited number like the TIME. The synchronization of the databases respective times can always occur with the NTP service (http://en.wikipedia.org/wiki/Network_Time_Protocol).
From the Telegraph link, we happily learn:
In an interview with the New Scientist magazine to mark his 70th birthday on Sunday, January 8, he was asked: "What do you think most about during the day?" to which he replied: "Women. They are a complete mystery."
For optical astronomy (that is in visible, near-infrared light) the long winter nights are good for observing objects continuously 24/24 as long as non-cloudy sky permits.
Of course the converse occurs in summer when darkness doesn't exist for months.
Polar auroras are also a nuisance.
When will we see the office PC combined with the coffee machine?
Linux based WebOS is going to be free, as HP announced yesterday, and Ubuntu has been installed on the Touchpad already. In the US Touchpads can be purchased for low price, like $99 on eBay. Outside the US some (for example me) got one for low price through Amazon.
In the linked article I didn't find that "only three" such antennae exist. The deep space network made of three big antennae is able to follow and control Voyager without interruption, but other isolated and big antennae exist and might be used to perturb the spacecrafts, probably with slight modifications.
Germany has a 100 m radiotelescope (Effelsberg), UK a 76m one (Jodrell Bank), Australia a 64 m one (Parkes), and China builds a 300m equivalent one, FAST, to be ready in 2013 (http://en.wikipedia.org/wiki/Five_hundred_meter_Aperture_Spherical_Telescope).
These stars are known to be strong in X.
Like for cars, deaths are just a part of the bill. To make a proper economic risk evaluation all the costs must be included. I am sure this has been done, but the only rational for not insuring nuclear power plants is that it would not be economically competitive.
Other costs that would make NE not competitive is the dismantling costs, and the waste management costs (100'000 yr is long...). Recently Germany started to redo the evaluation cost for dismantling the closed plants to find that a more accurate estimate is an order of magnitude higher. The same for the Superphenix breeder in France.