Constellations
In 2017, the first confirmed visitor from another star system tumbled through the solar system on a path that should have been simple to read, then accelerated slightly as it left without showing the coma or tail of an active comet — a gap that let Harvard astronomer Avi Loeb argue it might be alien technology, a claim most astronomers reject but one that has never quite gone away.
By Space Daily Editorial Team · Jun 14, 2026