Europa

Nieves penitentes on Earth's second highest volcano could offer insight in the search for extraterrestrial life.

The ocean is thought to be be billions of years old and may contain as much as three times the volume of all the liquid water on Earth.

At its closest, the planet's orbit will take it within around 398 million miles of Earth on June 12.

Study examines the Fermi Paradox—that aliens should exist, but we have not found them.

Jupiter's moon is a prime target in the hunt for life outside Earth.

Where do they come from? How do they work? And of course, will they help us find aliens?

Europa Clipper is scheduled to leave for the moon in the 2020s.

There are about 400 subglacial lakes around the world, but these are the first scientists believe to be salty.

Recent studies have delivered encouraging signs—here's what we now know.

"This is the first time an ecosystem has been found to survive directly on the basis of nuclear energy."

Right now, it's impossible to know how thick the stuff at Europa's surface may be.

New technology and new missions are making it more likely every day we'll finally spot life beyond Earth.

Sinking ice could carry food to Europa's underground ocean.

Ice, ice, baby—and flowing ice, at that.

Saturn's Enceladus has become a prime search location for alien life as potentially habitable waters appear to flow beneath its icy crust.

Want to get away? Far, far away? Google now has you covered.

Don't cry too much about Cassini. Upcoming missions are going to Mars, Mercury, the Sun, Europa and several asteroids.

Two waves were spotted sweeping across the enormous lake thanks to rare alignment of Io and Europa.

The apparent plumes could allow scientists to test for signs of microbial life.

Scientists are hoping that Juno can reveal how Jupiter was formed.

A video published by NASA on Monday shows Jupiter's largest moons moving around the planet.

The incident occurred at Lokomotiv Moscow's Europa League match with Fenerbahçe.

The space agency's main goal there will be to see if life is sustainable.

With Obama proposing a $18.5 billion budget for the space agency, a mission to Europa is edging closer.