3 ms·
Acceleration of 1I/‘Oumuamua from radiolytically produced H2 in H2O ice
- ggeorgovassilis 4y agoThis is interesting, thank you for the post. From the abstract: > Oumuamua began as an icy planetesimal that was irradiated at low temperatures by cosmic rays during its interstellar journey I think this is interesting for one more reason: Oumuamua is considered to be of extra-solar origin because it moves faster than solar system's escape velocity. When I started reading the abstract I thought "wow, could it be that radiolysis accounts for the extra speed and the thing is actually of solar origin?", but no, it still comes from outer space :)
- ahazred8ta 4y agoIt came from the direction of the Pleiades, so it probably traveled 400 light years. https://theconversation.com/how-i-discovered-the-origins-of-the-cigar-shaped-alien-asteroid-oumuamua-89577 https://theconversation.com/how-i-discovered-the-origins-of-...