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 ...

How is the total mass of the universe calculated? Bob GiddingsGreen Bay, Wisconsin Calculating the total mass of the universe ...

A team of researchers have used the James Webb Space Telescope to discover 12 ancient black holes from 12.9 billion years ago ...

In 1925, Edwin Hubble's observation of Cepheid variables in the Andromeda galaxy revolutionized astronomy, proving the ...

The universe exists because matter and antimatter are not good friends. Is there a scientific reason why the universe exists?

Neutrino oscillation is weird, but it may be weird in a useful way, because it might allow physicists to probe certain ...

Astronomers using the Webb Telescope may have found a new type of object: cold, glowing black hole stars from the early ...

Astronomers uncovered seven dust-shrouded quasars from Cosmic Dawn, doubling the known tally of early supermassive black holes.

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 ...