OSIRIS-REx stirs up a rocky blizzard tagging an asteroid in search of samples
‘Exiled’ carbon-rich asteroid found in distant Kuiper Belt
Unexpected discoveries on a metal world
Astronomers have discovered possible evidence for water on the surface of 16 Psyche, the largest metallic asteroid in the solar system. Measuring 186 miles across and consisting of almost pure nickel-iron metal, Psyche is thought to be the remnant core of a planetary embryo that was mostly destroyed by impacts billions of years ago.