Poll: Interstellar travel
When will humans leave our solar system for the first time?
Astronomy
Black Holes
Black holes are objects so dense that not even light can escape their gravity and since nothing can travel faster than light, nothing can escape from inside a black hole. The expression black hole was coined by John Wheeler.
Brown Dwarfs
Brown dwarfs are the link between stars and planets and are not massive enough like stars on the main sequence and sometimes called as failed stars. As a result of their mass-poor they don't start the hydrogen fusion. But brown dwarfs heavier than 13 Jupiter masses do fuse deuterium....
Mars
The planet Mars is the last terrestrial planet and the fourth planet of our solar system. He is the most likely target for a manned space mission. Already the first ancient civilizations were fascinated by him and honoured Mars as a god (for Romans/Greeks were he the god of war)....
Venus
Venus is the second planet from the sun and belongs to the terrestrial planets, sometime Venus is called Earth's sister planet, because both are very similar in size, mass and composition. Venus is named after the Roman goddess of love....
White Dwarfs
White dwarfs develop when a star from maximum 1.4 solar masses dies. These stars are not heavy enough to generate the core temperatures required to fuse carbon in nucleosynthesis reactions and after they have become a red giant during their helium-burning phase, they will shed their outer layers to form a planetary nebula, leaving behind an inert core consisting mostly of carbon and oxygen....
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- Darwin Mission
- COROT Space Telescope
- Interview with the Planet Hunter Geoff Marcy
- Terrestrial Planet Finder (TPF)
- Space Interferometry Mission
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04/02/2012 16:32:52
Huygens landed in the dark area. Water-ice pebbles up to a few centimetres in diameter were scattered near the landing site, and the surface here ...
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04/02/2012 15:14:14
Other results of the mission confirmed the presence of a complex organic chemistry, which reinforces the idea that Titan is a promising place to observe ...
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04/02/2012 13:42:48
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