An interstellar comet changed its chemistry after passing the Sun, revealing hidden layers and a surprising mix of carbon ...

When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that ...

I thought about the interstellar visitor as my daughter, wife, and I took turns dragging his wandering monster truck balloon ...

Trump says secret government UFO files will be released soon, inviting supporters to decide for themselves what’s real.

Some observers have questioned whether the general public is ready for the reality of what may be moving through our skies ...

Planets orbiting such stars may have a better chance of retaining their atmospheres and developing conditions suitable for ...

Donald Trump announced his administration would begin identifying and releasing UFO-related information earlier this year.

Aristotle's views on the nature of the cosmos dominated the Ancient Greek world. He argued that there's only one world, at ...

The subject of UFOs and aliens is vast and complex, making it impossible to summarize in one article. Flying saucers/UFOs made headline news throughout the world in 1947, sparked by two major, highly ...