So how many stars are there? Given all of the above, astronomers estimate that the Milky Way contains around 100 billion ...

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 ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Exactly how many stars are in space? – MeeSong, ...

Pulsars could be helping scientists distinguish between gravitational waves caused by supermassive black hole collisions and ...

A Rutgers-led team of scientists has uncovered evidence of how galaxies expand by tracing the invisible scaffolding of the universe created by a mysterious substance known as dark matter. "Analyzing ...

A newly discovered odd radio circle in space could serve as a time capsule for the violent events that shape galaxies.

Q How many galaxies are in the universe? — Gus Powvens, Madison, Wis. A Jim Lattis, director of the UW Space Place at the University of Wisconsin-Madison: Galaxies are clouds of stars that range in ...