This mysterious radio signal has puzzled astronomers for nearly 50 years

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

The largest digital camera ever built begins decade-long survey of the universe

The largest digital camera ever built is beginning to capture images of unseen corners of the universe in finer detail. The ...

TESS just found a planet in a new way—and more may be hiding in its eight years of data

For the first time, NASA's TESS (Transiting Exoplanet Survey Satellite) mission has identified a planet orbiting a distant star thanks to its warping of space-time. Unlike the star-hugging transiting ...