What's the truth behind this unusually tranquil city of galaxies?

Look closely at this image from NASA's Hubble Space Telescope and you'll see galaxies of various shapes and sizes clustered together toward the center-left of the image. A few foreground stars shine ...

The cluster named Abell 2029 collided with a smaller galaxy cluster, and its effects are still visible.

The galaxy cluster Abell 2029 is sometimes described as "the most relaxed cluster in the universe." This moniker does not ...

(Geneva, September 9, 2024) – The international treaty banning cluster munitions is making demonstrable progress, but is being tested by new use and transfers of cluster munitions by countries that ...

Cluster bombs have been banned by more than 120 countries, with many allies and humanitarian groups also opposing the use of the bomb. The weapon does not violate international law when used on the ...

Cluster feeding is when infants want to feed more frequently than usual. Often, feedings get shorter as well as more frequent. While cluster feeding can happen with both breast and formula feeding, it ...