If you find Jupiter, you’ll likely see four small dots to the side of the gas giant: they are the Galilean moons, four of the 95 natural satellites around the Solar System’s largest planet.

Astronomers have found the largest known structure in the universe. It is 1.4 billion light years across and contains nearly 70 galactic superclusters. It is also hundreds of thousands of times ...

Astronomers may have found the largest-scale structure in the known universe, which is a group of galaxy clusters and clusters of galaxy clusters that spans across roughly 1.3 billion light-years ...