The Big Bang model begins with a point of infinite density where the laws of physics break down. This is a deep theoretical problem that suggests the beginning of the Universe is not fully understood, ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

The universe seems to be spinning, and that could explain what dark energy is and why it's weakening while revealing our ...

The earliest light in the universe has been traveling across space since just after the Big Bang. Known as the cosmic ...

The object 9.1 billion light-years away, named FRB 20230521B, now holds the record for the most distant FRB ever recorded.

If the universe started from a single explosion, where’s the middle? As it turns out, space doesn’t work that way. In this ...

The LSST camera at the Vera C. Rubin Observatory has released its jaw-dropping first images, each capturing 45 times the area ...

The concept of a rotating universe may hold the key to understanding dark energy and our position within the multiverse.

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.

Guided by fast radio bursts, astronomers at the Center for Astrophysics have mapped how ordinary matter is distributed in the ...

A faint radio glow reveals a million-light-year halo enveloping one of the earliest galaxy clusters, hinting that energetic ...

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a ...