Is the expansion of the universe slowing down?

The Tycho supernova remnant NASA/CXC/RIKEN & GSFC/T. Sato et al; DSS It’s widely been thought that…

Lumpy ‘caterpillar wormholes’ may connect entangled black holes

Sometimes wormholes are lumpy Shutterstock / Champhei What happens when two black holes become connected through…

Brightest black hole flare ever caused by huge star being ripped apart

A supermassive black hole in the process of shredding an enormous star Caltech/R. Hurt (IPAC) Astronomers…

SpaceX’s Starlink and other satellites face growing threat from sun

Starlink satellite trails, as seen from space Don Pettit/NASA The number of satellites in orbit is…

We may have found a surprisingly nearby cluster of primordial stars

Artist’s impression of Population III stars as they would have appeared a 100 million years after…

The end of US support for the CMB-S4 telescope is devastating

The South Pole Telescope, which CMB-S4 would have used to measure variations in the temperature and…

Sorry, but interstellar visitor 3I/ATLAS really is a comet, not aliens

Interstellar comet 3I/ATLAS as seen by the Gemini South telescope in Chile International Gemini Observatory/NOIRLab/NSF/AURA/Shadow the…

A tiny nearby galaxy is home to a shockingly enormous black hole

It is hard to believe, but Segue 1, a very faint dwarf galaxy, is at the…

The Martian permafrost may be hiding veins of habitable liquid water

NASA’s Phoenix Lander’s solar panel and robotic arm with a sample in the scoop NASA/JPL-Caltech/University of…

See the beauty of space, captured by the astronauts who experienced it

Valeriy Polyakov in Russian space station Mir’s window, taken from the space shuttle Discovery in 1995…