Scientists first detected ripples in space known as gravitational waves from the merger of two black holes in September 2015. This discovery marked the culmination of a 100-year quest to prove one of ...

How space telescopes capture distant galaxies using infrared imaging, precision optics, and astronomy technology beyond Earth's atmosphere.

It feels so obvious that time moves forward that questioning it can seem almost pointless.

Scientists have detected a persistent background hum of gravitational waves. This cosmic hum is a new way to explore the universe. It comes from supermassive black hole binaries. This discovery opens ...