NASA astronauts Suni Williams and Butch Wilmore begin their 17-hour return journey to Earth after 9 months aboard the ISS. Follow Newsweek's live blog.

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

The spacecraft carried out the longest commercial operation on the moon to date—and also made history during its rare chance ...

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

The Earth and a starry night appear to merge into one strange and otherworldly sci-fi trip in this mind-bending photo ...

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 ...

You now have the unique opportunity to add a piece of history to your photography collection. The only photograph of Neil ...

According to the wife of an Apollo astronaut, her husband used to tell her secrets about what he really saw in space. Anita ...

While parts of the Earth saw a total lunar eclipse, the Blue Ghost lunar lander captured stunning imagery of a solar eclipse on Friday. See the rare view here.