The simple answer to this is no, they do not. In fact, almost all galaxies are observed to have redshifts. The universe is expanding, and this “cosmological redshift” causes the light from distant ...

Galaxies spotted by the James Webb Space Telescope have been causing trouble for the standard story of cosmic history. Some appear bright, massive, and oddly compact at a time when the universe, under ...

The boundary of everything humans can observe stretches roughly 92 billion light-years across, a figure shaped by 13.8 ...

NASA’s Nancy Gracy Roman Space Telescope won’t launch until 2027, and it won’t start operating until some time after that. But that isn’t stopping excited scientists from dreaming about their new toy ...

Photometric redshift estimation has become an indispensable tool for mapping the large-scale structure of the Universe in modern imaging surveys. By inferring galaxy distances from multiband ...

The long-standing problem of the cosmological constant, described both as “the worst prediction in the history of physics” and by Einstein as his “biggest blunder”, is being tackled with renewed ...

According to physics, the universe and everything in it can be explained by just a handful of equations. They’re difficult equations, all right, but their simplest feature is also the most mysterious ...

Doing away with complex calculations? (CC-BY-2.0/Boaz Arad) The next time you need to quickly convert the redshift of some distant cosmic object to parsecs or kilometres, and find that your laptop and ...