At the heart of our sun, fusion is unfolding. As hydrogen atoms merge to form helium, they emit energy, producing the heat ...

The scientists behind the MAGIS-100 experiment aim to use state-of-the-art lasers to shed light on ultralight dark matter.

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Our Sun will not explode like other stars. Instead, it will slowly expand into a red giant, consuming inner planets. This ...