For more than 300 years, Isaac Newton's simple rule about gravity has held up: the farther apart two objects are, the weaker ...

Explore 25 universe mysteries scientists are still scratching their heads over, from dark matter to the Big Bang's secrets.

Explore the 25 Biggest Discoveries in Space Exploration that fundamentally reshaped our understanding of the universe. From ...

Astronomers are rethinking one of cosmology’s biggest mysteries: dark energy. New findings show that evolving dark energy models, tied to ultra-light axion particles, may better fit the universe’s ...

A detector deep beneath the frozen southern continent has obtained first evidence of a rare cosmic phenomenon.