The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

This composite image was weeks in the making, as Horálek’s two "crossings" happened months apart. Mars traced its path ...

Beehive cluster, a group of 1,000 stars, will be visible to stargazers in January. How to see it, what’s visible to naked eye ...

NASA's Hubble space telescope has captured some spectacular images. One of its latest images is intriguing for more than just its looks. That's because this image of Abell 1351 showcases a massive ...

A bubbly-looking galaxy smashup called the Champagne Cluster offers a rare glimpse into cosmic collisions—and the hidden behavior of dark matter. The Champagne Cluster is a dramatic cosmic system ...

Here are seven of the most beautiful star cluster and star-forming region images captured by NASA Hubble Space Telescope, ...

The advanced HST was launched in 1990. Ever since it went into space, various out-of-this-world discoveries have been made. Now, the giant space telescope's latest captured images of a space cluster ...

A "Christmas tree cluster" of stars is captivating astronomers and stargazers alike. NASA on Tuesday released a composite image of the star cluster, which they said "enhances the resemblance to a ...

Studies of near-Earth space will never be the same again, following the successful commissioning of the European Space Agency’s Cluster mission. For the first time in the history of space exploration, ...