For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

By using light to emulate the structure of space-time, researchers can better understand black holes – and the exotic objects ...

A team led by the Italian National Institute for Astrophysics discovered the most distant known fossil galaxy — a relic of ...

A rare Jupiter-sized planet AT2021uey b was found 3,200 light-years away using microlensing, a method based on Einstein's ...

My telescope, set up for astrophotography in my light-polluted San Diego backyard, was pointed at a galaxy unfathomably far from Earth. My wife, Cristina, walked up just as the first space photo ...

Novel light flashes localized at singular space-time points have been observed, arising from topological properties linked to the time dimension.

NASA's Hubble Space Telescope spotted a supermassive black hole in an unexpected place, 2,600 light-years from the galaxy's core.

Imperial physicists have recreated the famous double-slit experiment, which showed light behaving as particles and a wave, in time rather than space.