Philae comet lander falls silent

The Rosetta team is hoping that a software patch will help re-establish reliable contact with the little Philae lander, lodged somewhere on the comet's surface.

Unprecedented $100 million to SETI

Breakthrough Listen initiative, announced Monday, will scan the nearest million stars, plus stars in 100 other galaxies, for signs of an advanced civilization.

Intelligent life in the universe?

Scientific arguments suggest that alien civilizations should be common in our galaxy. If so, where is everybody? That question is known as the Fermi paradox.

Mountain with a moat on Charon

Latest image release from New Horizons team shows Pluto's moon Charon a strange mountain rising out of a depression. They're calling it a “mountain in a moat.”

Update on mission to asteroid Bennu

NASA's OSIRIS-Rex mission is on target for a 2016 launch to near-Earth asteroid Bennu. It will reach Bennu in 2018 and return samples to Earth in 2023.

Surprising frozen plains in Pluto’s heart

The latest data from NASA’s New Horizons spacecraft reveals a vast, craterless plain apparently no more than 100 million years old.

This date in science: America and Russia meet in space

On July 17, 1975, a famous first handshake between nations in space.

New Horizons spacecraft sweeps past Pluto

New Horizons is alive and well and beyond the Pluto system. On Wednesday, scientists began releasing close-up images of geology on this distant ice world.

Charon’s surface youthful and varied

Pluto’s largest moon Charon has cliffs, troughs and a dark marking at its north pole, nicknamed 'Mordor' by New Horizons scientists.

Astronomers find Jupiter and sun twins

The most accurate analog ever found for our sun and and its largest planet, Jupiter. Could there be another Earth in this system, too?