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 ...

Researchers have looked at how particular microbes from Earth would fare in conditions like those of Mars, the moon, and the ...

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 ...

A provocative study suggests that Jupiter’s frozen moon Europa may not only be hospitable, but that life from Earth could be ...

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

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this ...

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

The long-running series in which readers answer other readers’ questions comes up with an epic extraterrestrial playlist for Earth’s first contact from beyond the stars This week’s new question: ...