Has Earth been visited by an alien spaceship? Harvard Professor Avi Loeb vs. everybody else
A highly unusual object was spotted traveling through the solar system in 2017. Given a Hawaiian name,Ê»Oumuamua, it was small and elongated—a few hundred meters by a few tens of meters, traveling at a speed fast enough to escape the Sun’s gravity and move into interstellar space.
phys.org
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2021-02-19
