Imbrium basin – Astronomy Now

Moon’s Imbrium Basin formed by protoplanet-sized asteroid impact

20 July 2016 Astronomy Now

Around 3.8 billion years ago, an asteroid more than 150 miles across slammed into the Moon and created the Imbrium Basin — the right eye of the fabled Man in the Moon. New research suggests an Imbrium impactor that was two times larger in diameter and 10 times more massive than previous estimates.

Chinese lunar rover’s rock analysis reveals a more diverse Moon

23 December 2015 Astronomy Now

China’s Yutu rover finds volcanic rocks unlike those returned by earlier missions, offering tantalising clues to the period of lunar volcanism that suggest the Moon was never a fully homogenised body like the Earth. The basalts the rover examined are a new type, chemically different from those retrieved by the Apollo and Luna missions 40 years ago.