Scientists may have glimpsed some of the oldest material in the universe. According to a new, yet-to-be-peer-reviewed study, researchers found an unidentified object nearly 13.5 billion light years ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter.

The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've observed in the universe so far.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

Not so far away and long ago: A galaxy near the Big Dipper is no longer the "Most Distant Object Known," according to astronomers who have made new measurements of its distance. The team, led by ...

Scientists have discovered that the 3I/ATLAS — a Manhattan-sized interstellar object that potentially has alien tech — is ...

A gamma-ray burst from about 13 billion light years away has become the most distant object in the known universe. Edo Berger of the Harvard Smithsonian Center for Astrophysics offers his insight ...

CAPE CANAVERAL, Fla. — Astronomers have discovered what may be the brightest object in the universe, a quasar with a black hole at its heart growing so fast that it swallows the equivalent of a sun a ...

You’d assume that the brightest object in the known universe would be a pretty easy thing to discover, but astronomers have only just spotted it. This overlooked show-off is a supermassive black hole ...

The James Webb Space Telescope, launched in 2022, has discovered something that may shatter current theories about the universe's early development.

Space is littered with cosmic wanderers. Some are stars booted from the grip of a companion they once had. Others are rogue comets and asteroids on runaway trajectories with nowhere to go and no one ...