The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...

Astronomy is, in essence, an exercise in inference. We cannot touch the stars, nor scoop up galaxies in a lab. Instead, we ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

A controversial prediction about black holes and the expansion force of the universe could explain a cosmology mystery ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

Black holes are eaters of all things, even radiation. A new study published in Physical Review Letters suggests that black ...

Astronomers have long thought the universe should look generally the same in every direction, but an anomaly in the radiation ...

Join the celebration of International Astronomy Day by looking up at the spectacular southern night sky, engaging in exciting ...

The scientific study of cosmology, the field that focuses on the origins and evolution of the universe, is barely a century old. It has already been transformed more than once by new ideas, new ...

The Atacama Cosmology Telescope is a collaborative project led by Penn and Princeton researchers (Photo Courtesy of ACT Collaboration). The Atacama Cosmology Telescope — a National Science ...

Astronomers have assumed for decades that the Universe is expanding at the same rate in all directions. A new study based on data from ESA’s XMM-Newton, NASA’s Chandra and the German-led ROSAT X-ray ...