Meteorites, Asteroids, & Comets: December 2014

A new analysis of a Martian rock that meteorite hunters plucked from an Antarctic ice field 30 years ago this month reveals a record of the planet's climate billions of years ago, back when water likely washed across its surface and any life that ever formed there might have emerged.

Research over the past four decades has shown a rich variety of complex organic molecular content in some meteorites.

Many aspects of planet formation are controlled by the amount of gas remaining in the natal protoplanetary disk (PPDs).