PENNSYLVANIA, USA — High above the horizon on crisp autumn nights, a shimmering cluster of blue-hued stars begins to appear. Known as the Pleiades, or the seven sisters, these stars have been ...

Some of the biggest black holes ever picked up through gravitational waves may not have formed in a single stellar collapse ...

The most massive black holes in the universe detected by the ripples they make in spacetime were not born directly from ...

Mass matters: Massive star clusters shed their natal gas clouds in about 5 million years, quicker than smaller clusters that take 7–8 million years. Galactic impact: Faster emergence boosts ...

Welcome to the Tuesday Telescope. There is a little too much darkness in this world and not enough light—a little too much pseudoscience and not enough science. We'll let other publications offer you ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Globular clusters like this one, Omega Centauri, are very ...

The most distant and rewarding sights in the night sky are also the faintest. Here’s what deep-space objects are, what optics you’ll need to see them and how to plan your observing. When you purchase ...

An international team of astronomers reported evidence for the formation of mysterious “super star clusters” Jan. 9 at the annual meeting of the American Astronomical Society in Washington, D.C. These ...

A trio of massive, young star clusters found embedded in a star cloud may shed light on the formation of super-star clusters and globular clusters. The discovery, made with images taken with the ...

Fastest cluster emergence: Massive star clusters disperse their birth clouds in about five million years, compared to seven to eight million for smaller clusters. Impact on galaxies: Early ultraviolet ...