Harvard physicist says massive interstellar object could be alien probe on 'reconnaissance mission'

Massive interstellar object 3I/ATLAS, larger than Manhattan, shows unusual glow pattern and planetary alignment that Harvard ...

Is 3I/ATLAS an alien probe? James Webb Telescope finds 'anomalous' methane on interstellar comet

By the time the rumours reached the 'alien probe' stage, 3I/ATLAS had already slipped past the Sun and was heading back into ...