Galaxies are clouds of stars that range in both size and composition. Some contain hundreds of millions of stars while the largest galaxies can contain trillions of stars. And while it’s not entirely ...

Astronomers believe there are about 100 billion stars in the Milky Way. But, this number of stars depends on various factors. To figure out how many stars are in the Milky Way, astronomers have to ...

Using the James Webb Space Telescope (JWST), scientists found that many galaxies started as thick discs before forming the thin discs we see now. This discovery helps answer a long-standing mystery ...

New simulations show that early ultraviolet light controlled whether ultra-faint dwarf galaxies could form stars.

Black holes formed before the Big Bang may still exist as cosmic fossils, offering new clues about dark matter and the origin ...

A Jim Lattis, director of the UW Space Place at the University of Wisconsin-Madison: Galaxies are clouds of stars that range in both size and composition. Some contain hundreds of millions of stars ...

Blue Sky Science is a collaboration of the Wisconsin State Journal and the Morgridge Institute for Research. A black hole discovered 1,000 light-years from Earth is itself invisible, but it has two ...