The supernova exploded over 13 billion years ago in a galaxy far, far away.

Astronomers have sighted the oldest known stellar explosion, dating back to when the universe was less than a billion years ...

NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...

In the end, the Universe becomes a place where gravity and quantum physics slowly turn all mass into faint streams of particles.

Experts weigh in on the president's gold-soaked makeover of the Oval Office and more.

"This is certainly an outburst unlike any other we've seen in the past 50 years." ...

For roughly 2 billion years of Earth's early history, the atmosphere contained no oxygen, the essential ingredient required ...

New simulations of Milky Way-like galaxies reveal that the strange split between two chemically distinct groups of stars may ...

Voyager 1, NASA’s deep-space probe, could soon become the first spacecraft to reach a historic milestone. In November 2026, the probe will be one light-day from Earth.