Finding X-rays coming from one of the little red dots discovered by the James Webb Space Telescope could be the key to ...

Two isolated white dwarfs, each lacking the companion star that conventional astrophysics says should fuel high-energy radiation, are emitting X-rays that no existing model can fully explain.

The third known visitor from interstellar space, comet 3I/ATLAS, is putting on a show that plays out in high‑energy light instead of visible fireworks. As it barrels through the inner solar system, ...

Astronomers have found a potential new piece of the ongoing puzzle over “little red dots” (LRDs). It’s a distant smudge in the sky reminiscent of the mysteriously compact, crimson orbs that keep ...