Peter Smith, Principal Investigator of NASA's Phoenix Mars Mission talks about some possible evidence of signs of life in Martian soil by studying chemicals on Mars.
The OCO satellite splashed into the sea near Antarctica Tuesday, Feb. 24, 2009, leaving eight years of preparation to study Earth's carbon cycle from space unrealized.
A study that's opened up the possibility that life existed on the planet Mars deep in its past. The science team of a NASA mission looks at a Mars mineral on its surface.
Astronomer Dean Hines talk about an enormous, moth-shaped bunch of interstellar gas and dust showing signs of planet formation, it's dubbed "Space moth".