The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

"These relics are effectively fossils of the planet formation process, holding vital clues to deciphering the history of our solar system." ...

However, not all of those celestial bodies survived, and a new analysis of a the meteorite NWA 15915 shows that it likely originated from a world that was similar to Mercury in its composition—but not ...