What we saw in the DESI experiments, and now strengthened by our South Pole Telescope observations, is that dark energy is ...

We know black hole mergers occur because we can detect the resulting gravitational waves. But when trying to piece together ...

The earliest light in the universe has been traveling across space since just after the Big Bang. Known as the cosmic ...

New evidence suggests the universe might not behave as expected, raising questions about the costs of being wrong.