NASA scientists have finally tallied how much material a spacecraftsnatched from a distant "potentially hazardous" asteroid, and it turns out they've got more than double what they expected.
The sample — roughly 4.3 ounces (122 grams) of rocky space rubble that the OSIRIS-REx spacecraft collected from the asteroid Bennu — could contain some of the earliest precursors for life and is the first space rock ever retrieved by a NASA mission.
