We have a major research program to investigate the thermal histories of lunar rocks, achondritic meteorites, and Martian meteorites. |
The exception is a group of meteorites called howardites, eucrites, and diogenites. |
Late-forming chondrules in meteorites are thus the last souvenirs of the process that formed our planetary system. |
This foil doesn't do very well in the air, but it protected it from meteorites and from the ultraviolet radiations from the sun. |
Unique samples of moon rock and meteorites as old as the solar system landed on a Bickley girls' school. |
Sources of other specific meteorites remain unproven, although another set of eight achondrites are suspected to have come from Mars. |