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

Webb’s new images of the Bullet Cluster reveal the most detailed dark matter map yet, shedding light on cosmic collisions and ...

According to our best possible understanding of the universe, regular matter is only a small fraction of the matter-energy ...

NASA's James Webb Space Telescope recently zeroed in on the Bullet Cluster—delivering highly detailed images that show a greater abundance of extremely faint and distant galaxies than ever before.

It means that the Bullet Cluster collision is still exceptional, but only in the one-in-a-hundred sense and not in the one-in-100-million sense indicated by the earliest research.

The Bullet Cluster is a massive collection of two large groups of galaxies some 3.8 billion light-years distant. Skip to content Introducing the all-new Astronomy.com Forum!

Where the cluster is quiescent, there's no separation of matter from gravitation. H.S. Hwang et al., ApJ, 797, 2, 106 When your cluster is undisturbed, the gravitational effects are located where ...

Dark matter just got a shade more mysterious. Scientists studying a smashup between giant clusters of galaxies have watched how each cluster’s dark matter passes through the collision – and ...

Many physicists will happily tell you that the universe is primarily made up of a substance called dark matter, but ask for a definite answer on why we haven't directly glimpsed it yet and you would ...