Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Chinese mission Tianwen-2 released a new image of an asteroid orbiting Earth, which is sometimes referred to as a “quasi-moon ...

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...

Sometimes the most extraordinary places hide in plain sight, and the Dee Wright Observatory near Blue River proves that ...

The recent discovery of an enigmatic substance on the surfaces of both Titan, Saturn’s largest moon, and Pluto, our solar ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

Jellyfish have returned to the Gulf of Maine, and some can pack a nasty sting. The large lion's mane jellyfish has been seen in the waters of New Hampshire and can wash up on the shore. "They're very ...

Something is absorbing light on the surfaces of Pluto and Saturn’s moon Titan, and figuring out what it is could be crucial to understanding Titan’s complex chemistry ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week, with astrophysicists in the UK and Australia stressing that while ...

It is often suggested that anyone who finds one of these invasive worms should kill it (carefully). Here's what else to know.