September 22, 2020

Bright boulders on asteroids Ryugu and Bennu

Three articles published in the journal “Nature Astronomy” report the results of as many researches on asteroids Ryugu and Bennu, which are being explored respectively by JAXA’s Hayabusa 2 and NASA’s OSIRIS-REx space probes. The two asteroids already showed some similarities and, in a news & views editorial, Maria Cristina De Sanctis talks about the catastrophic events that might have generated them and the bright rocks discovered on the surface of both despite their dark color. Catastrophic events are also the object of the other two articles, and in the one focused on Bennu, there are indications that some rocks on its surface come from Vesta, one of the largest objects in the asteroid belt between Mars and Jupiter.