The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, ...

This unprecedented view of the Bullet Cluster provided by the James Webb Space Telescope and the Chandra X-ray Observatory ...

Bechtol and his fellow scientists hope they can learn more about the universe than all of scientific progress has allowed in ...

Are we living in a cosmic void? New theory suggests our galaxy sits in a giant hole warping the universe's expansion.

Astronomers have turned the Atacama Large Millimeter/submillimeter Array (ALMA) into a time machine to peer back in cosmic time to 1 billion years after the Big Bang.

Thomas Mulligan shares the discovery that there are now known to be more galaxies in the universe than stars.

New simulations suggest that dozens of ultra-faint “ghost” galaxies may be orbiting the Milky Way, hidden from current ...

A team led by the Italian National Institute for Astrophysics discovered the most distant known fossil galaxy — a relic of ...

But in the past two decades, new types of black holes have been seen and astronomers are beginning to understand how they ...

Scientists think they found evidence of weird ancient stars called "dark stars" that are powered by dark matter instead of ...

Astronomers want to unlock the secrets of the "Cosmic Dawn" by sending a miniature spacecraft to listen out for an "ancient ...