Meteorites are quite rare since most materials in space never come anywhere near the Earth, and of those that do come toward ...

There are over 5,000 known types of minerals. Just a few minerals make up most of the rocks we see, though: feldspars, amphiboles, quartz, olivine, garnet, micas, calcite, and pyroxenes.

The Perseverance rover has sampled mm-size lithic fragments containing olivine likely from at least two source regions from ...