Long before Sputnik launched, something else may have already been orbiting Earth. Known as the Black Knight Satellite, this mysterious object has sparked theories of alien observation, ancient ...

We often think of ourselves as more capable than we really are. For example, according to this survey, four in five Americans consider themselves knowledgeable about the human body, but only one in ...

At least 67,800 years ago, someone placed their hand on the wall inside a limestone cave and used a reddish-brown pigment to trace the outline of a handprint. But the unknown artist didn’t stop there: ...

There's a new development in the yearslong international mystery over Havana Syndrome: The U.S. has obtained and has been testing a device that officials believe could be linked to the debilitating ...

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 ...

Astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spacecraft. 3I/ATLAS was confirmed as the third known object to enter our solar system from interstellar ...

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an exceedingly rare discovery: a mysterious object passing through the solar ...

New bruising on Donald Trump’s left hand is reviving questions about his health nearly one year after he became the oldest president to take the oath of office. Across a series of events last week, ...

When ET phones home, it could be his last call. Contrary to sci-fi movie depictions, our first contact might not be with a super advanced alien civilization at the height of power. Rather, Ivy League ...

Note: Some submissions are from this Reddit thread. 1. "Pentalogy of Cantrell, which is when the heart is outside of the chest because the sternum has not fused. I'd seen it before with just a bit of ...

The NASA/ESA Hubble Space Telescope reobserved interstellar comet 3I/ATLAS on 30 November with its Wide Field Camera 3 instrument. At the time, the comet was about 286 million kilometers from Earth.