Astronomers have used the James Webb Space Telescope to observe three early ultra-massive galaxies, formed shortly after the ...

Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made ...

Using the James Webb Space Telescope, an international cooperation of NASA and the European and Canadian space agencies, a ...

A team led by Dante Minniti and including Vatican Observatory scholars maps the Milky Way in stunning detail. Built from ...

The Atacama Large Millimeter/submillimeter Array (ALMA) has been used to discover REBELS-25, a Milky Way-like galaxy from the ...

Massive stars about eight times more massive than the Sun explode as supernovae at the end of their lives. The explosions, ...

Primordial black holes may be exploding throughout the universe. If we can catch them in the act, it could pave the way to ...

The new observations involve a supermassive black hole that existed when the cosmos was about 11% its current age.

At the heart of our Milky Way galaxy lurks a supermassive black hole about four million times the mass of the sun, called ...

Astronomers have discovered a "dead star" neutron star is spinning at an incredible 716 times a second, making it the joint fastest-spinning cosmic body ever seen. Not only this, but the neutron ...

A century ago this month, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the ...

Blue dots in this field of galaxies show galaxies that contain supermassive black holes emitting high-energy X-rays. This illustration of material swirling around a black hole highlights a particular ...