A galaxy cluster once thought to be “dead” is unexpectedly forming stars at an astonishing rate, challenging established theories about star formation in aging galaxies. The Phoenix Cluster ...

The dazzling green tree with seemingly sparkling blue and white lights was found in the Milky Way and is a formation of young stars – some bigger than the sun.

Some of the oldest stars in our galaxy belong to a cluster located 7,800 light-years away, according to a new paper published in The Astrophysical Journal Letters.

A "Christmas tree cluster" of stars captured by NASA is captivating astronomers and stargazers alike.

A report from Nature shows that astronomers may have found a medium-sized black hole, a kind they've long looked for.

One of the galaxy’s most massive young star clusters is revealed in a stunning new image from the Hubble Space Telescope. The cluster of thousands of stars lies 20,000 light years from Earth in ...

It showcases a globular cluster, NGC 1651, in the Large Magellanic Cloud. This cluster of stars is about 120 light-years across.

Like its mythological namesake, the Phoenix Cluster burns with blisteringly hot gas, which cools to birth stars. The James Webb Space Telescope has now learned how this galaxy cluster does it.

NASA releases an image of "The Christmas Tree Cluster", a new grouping of stars that appears to form the shape of a green-hued Christmas tree.

Using the Gaia space telescope, astronomers have observed 55 massive stars ejected from their home star cluster in the Large Magellanic Cloud at speeds equivalent to 80 times the speed of sound.

American space agency NASA's Hubble Space Telescope recently captured a stunning image of a beautiful open star cluster called NGC 1858, located in an area full of star-forming regions.

A composite image of the star cluster makes NGC 2264 look like a Christmas tree, NASA said, with a bright green glow and what looks like blue and white sparkling lights. But rather than being pine ...