Isaac Arthur on MSNOpinion
The ancient alien theory sounded possible - until the missing evidence became impossible to ignore
What if an alien civilization did not just exist somewhere in the universe, but actually reached Earth in the distant past?
A team of astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spaceship. The comet was confirmed in July 2025 as the third known object to enter our solar ...
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