Earth is percieved as a rocky planet, what are other planets like? Did you know Mars is cold and that outer planets are really gigantic gas envelopes? What about a liquid planet? Could such a planet ...

Generations of scientists have tried to explain how the solar system began. None of the explanations is wholly adequate. The trouble is that the solar system is not a haphazard collection of planets ...

Cosmochemists now present the most comprehensive comparison to date of the isotopic composition of Earth, Mars and pristine building material from the inner and outer Solar System. Earth and Mars were ...