Astronomers observed the fading light of supernova SN 2025kg, which followed the fast X-ray transient (FXT) named EP 250108a.

In November 1572, a brilliant new star appeared in the constellation Cassiopeia, shining so brightly that it was visible during the day. Danish astronomer Tycho Brahe carefully documented this ...

So much happened in the earliest moments of the universe. Elementary particles appeared, the first nuclei of hydrogen and ...

Ghost particles' can zoom through you without a trace. Scientists are getting to the bottom of this cosmic mystery ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density – given that the universe contains a lot of relatively empty space, could ...

Japan–US scientists combine T2K and NOvA data to measure neutrino mass gaps with record precision, offering clues to the ...

Motley Fool Supernova's return with the real-money Odyssey and Phoenix portfolios. A preview of new tools and what to expect as the new Supernova missions lift off. To catch full episodes of all The ...

Dr. Tomer Shenar, Guy Shtainer, Roey Ovadia & Zehava Katabi. A study led by Dr. Tomer Shenar from TAU's School of ...

Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has ...

The Hubble Space Telescope was originally expected to last about 15 years in orbit, before its optical surfaces became too ...

Astrophotographer David Joyce, based in Kentucky, offers us a spectacular window into the cosmic remains of a giant star that ...

NASA's Chandra X-ray Observatory and Hubble Space Telescope confirmed the existence of a companion star orbiting Betelgeuse, ...