
Space & PhysicsOctober 1, 1971
The Lunar Rocks
Although it is too soon for an analysis of the rocks returned by APOLLO 15, the material provided by earlier missions tells of a moon whose outer shell crystallized more than three billion years ago

The Lunar Rocks
Although it is too soon for an analysis of the rocks returned by APOLLO 15, the material provided by earlier missions tells of a moon whose outer shell crystallized more than three billion years ago

Organic Matter from Space
Recent studies have found in meteorites organized elements and hydrocarbons. Are they remnants of life or perhaps nonbiological carbon compounds formed early in the history of the solar system?