small galaxies

Dartmouth-led black hole hunters tackle a cosmic conundrum

Henize 2-10 is a small irregular galaxy that is not too far away in astronomical terms — 30 million light-years. “This is a dwarf starburst galaxy — a small…

When galaxies switch off

Some galaxies hit a point in their lives when their star formation is snuffed out, and they become “quenched”. Quenched galaxies in the distant past appear to…

Astronomers Pin Down Galaxy Collision Rate

The galaxy merger rate is one of the fundamental measures of galaxy evolution, yielding clues to how galaxies bulked up over time through encounters with other…

Making stars: Studies show how cosmic dust and gas shape galaxy evolution

“Formation of galaxies is one of the biggest remaining questions in astrophysics,” said Andrey Kravtsov, associate professor in astronomy & astrophysics at the…

Hubble Astronomers Uncover an Overheated Early Universe

The consequence was that fierce blasts of radiation from voracious black holes stunted the growth of some small galaxies for a stretch of 500 million years.This is the conclusion of a team of astronomers who used the new capabilities of NASA's Hubble Space Telescope to probe the invisible, remote universe….

Hubble Provides New Evidence for Dark Matter Around Small Galaxies

NASA's Hubble Space Telescope has uncovered a strong new line of evidence that galaxies are embedded in halos of dark matter.Peering into the tumultuous heart…

How Do Galaxies Grow?

Astronomers have caught multiple massive galaxies in the act of merging about 4 billion years ago. This discovery, made possible by combining the power of the…