On Tuesday, two NASA astronauts who had been in orbit since June, Suni Williams and Butch Wilmore, splashed down in calm, ...

Suni Williams and Butch Wilmore returned to Earth in a SpaceX capsule after problems with a Boeing vehicle set in motion an ...

The final results from the Atacama Cosmology Telescope offer the sharpest, most sensitive view of the early cosmos that ...

New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe’s ...

NASA astronaut Don Pettit captured this stunning long-exposure view of Earth and stars from space at night from the International Space Station.

New research by the Atacama Cosmology Telescope, or ACT, collaboration has produced the clearest images yet of the universe’s ...

New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe's ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

New images of the infant universe captured by the Atacama Cosmology Telescope (ACT) are the most precise "baby pictures" to ...

The new images—of when the cosmos was a mere 380,000 years old—show the "first steps towards making the earliest stars and galaxies." ...

New insights from the Atacama Cosmology Telescope offer unprecedented images of the universe at 380,000 years old, revealing ...

Google's Fitbit Ace LTE is full of whimsy, fitness-centric games, and useful security features - and it's on sale for $180.