But in the past two decades, new types of black holes have been seen and astronomers are beginning to understand how they ...

So asking, " Where's the center of the universe? " is somewhat like asking, "Where's the center of the balloon's surface?” ...

If the universe started from a single explosion, where’s the middle? As it turns out, space doesn’t work that way. In this ...

For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

Dark matter remains one of science's deepest mysteries. It makes up about 25% of our universe, yet scientists only observe ...

Decades ago, astronomers estimated that “ordinary” matter (basically everything that isn’t dark matter or dark energy) makes ...

Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than ...

Supernovae like these are very luminous and referred to as "standard candles" in astronomy. As fixed points, they are used to ...