Mysterious interstellar asteroid 'Oumuamua could be a giant solar sail 'sent from another civilization to look for signs of life,' claim astronomers from Harward Center for Astrophysics

https://ift.tt/2Jz1s8S

Submitted November 03, 2018 at 08:37AM by Amir_PD https://ift.tt/2DmYqnS