A new galaxy was found with 10,000 more of unseen mass than the Milky Way. Now, scientists are wondering if there are more of ...

A massive, spacetime-warping cluster of galaxies is the setting of today's NASA/ESA Hubble Space Telescope image. The galaxy ...

Imagine a star powered not by nuclear fusion, but by one of the universe’s greatest mysteries—dark matter. Scientists have ...

NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision between ...

This particular isotope burns away quickly inside stars due to their intense heat. But in cooler objects like brown dwarfs, ...

To understand gravitational lensing and dark matter, James Jee, a professor at Yonsei University, says to think of a pond ...

The Nancy Grace Roman Space Telescope, set to launch in 2027, would focus on possibly 160,000 gravitational lenses, of which 500 could contain dark matter.

Because it doesn't interreact with light or electromagnetism, dark matter exists to us only through its influence on visible ...

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

The most powerful telescope ever launched into space uncovered a cluster of forming stars within the "toe beans" of the Cat's ...

A colossal cluster of galaxies is bending the very fabric of space—and it’s the focus of this week’s breathtaking image from ...

The telescope peered into a single “toe bean” of the nebula, uncovering clusters of gas, dust and young stars.