8 burning theories that could prove 3I/ATLAS is an alien spacecraft, according to Harvard scientist

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.
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Astronomers detect rare 'free floating' exoplanet 10,000 light-years from Earth

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...
Space.com on MSN

Flat Earth, spirits and conspiracy theories — experience can shape even extraordinary beliefs

The answer is as obvious as it seems – the Earth looks flat when you're standing on it, not cone-shaped. Visual evidence ...

In 1952, DC’s skies were littered with US fighter jets chasing UFOs. More than 70 years later, the mystery persists

The night was warm and muggy over New Castle Air Force Base in Delaware, the kind of heat that clung to the metal skins of the alert fighter jets lined along the runway.
We Are The Mighty on MSN

The 1952 UFO Washington sighting that upended decades of denial

It emerged from decades of sightings, decades of unanswered questions, and an accumulation of credible reports from military ...