Monster Galaxies Gobble Smaller Neighbors to Bulk Up

Massive galaxies have stopped making their own stars and started engulfing little nearby galaxies instead, according to a new survey of 22,000 galaxies. Remnants of cannibalized galaxies can still be…

Preserving the X-ray Universe for future generations

October is designated as American Archive Month, to promote an awareness of the importance of historical records. While many think ‘archive’ may only apply to books and letters, there are…

Newly Discovered “Cosmic Wall” Is 1.3 BILLION Light-Years Across

If we could zoom out of the universe, we would see galaxies organized in clusters, and those clusters form superclusters that are distributed along dense filaments between under-dense voids. On…

Fly through distant galaxies with Hubble eXtreme Deep Field

  Ever wonder what it’d be like to fly through thousands of galaxies spanning back 13.2 billion years in time? Nearly every dot or smear of light you see is…

Largest-Ever Simulated Universe Created With Supercomputers

One of the principles of science is that by repeating experiments we can learn some fundamental laws of nature. This is complicated when we are trying to learn about the…

Hubble Captures the Glowing Heart of a Spiral Galaxy

Here’s a look deep into the heart of a nearby spiral galaxy.  NGC 1433 is about 32 million light-years from Earth, and it belongs to a type of active galaxy…

Our Home Supercluster Gets a Map and a Name

Where in the universe is the Milky Way? Galaxies like ours huddle in clusters, and large-scale systems of galaxies, called superclusters, have vague boundaries that are difficult to define (especially…