Evidence now suggests the universe’s expansion has started to slow, not speed up. The findings imply dark energy is weakening ...

Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than in neighboring regions of the universe, astronomers say. Their theory is a ...

The universe may be vast, but researchers have multiple points of evidence that reveal its shape. White House tells Supreme Court it doesn’t care about the tariff money raised ...