Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

Primordial black holes could rewrite our understanding of dark matter and the early universe. A record-breaking detection at ...

Dark matter makes up roughly 85% of the stuff in our universe. It doesn’t glow, it doesn’t reflect light, and we can’t even ...

The new research suggests an alternative origin. Dark matter could have instead been born extremely hot, opening up ...

Dark matter, the invisible substance that shapes the Universe, may have had a far more dramatic beginning than scientists once believed.

A professor at the University of California, Santa Cruz, he was a key contributor to a landmark paper that laid out how the ...

Step through the ultimate visual tour of the outer solar system. From Mars’ iconic rover panoramas to Jupiter’s Great Red ...