The universe

A X2.3 solar flare Wednesday morning (Nov. 6), leading to shortwave radio blackouts for parts of the southern hemisphere.

The hungriest known black hole in the early universe has been found, thanks to teamwork between NASA's James Webb Space Telescope and Chandra X-ray Observatory.

We're about to learn more about the solar wind, thanks to NASA's Coronal Diagnostic Experiment (CODEX), which just arrived at the International Space Station aboard a SpaceX Dragon cargo spacecraft.

NASA's Parker Solar Probe swoops in for its seventh and final swing past Venus ahead of its history-making encounter with the sun on Christmas Eve.

Using NASA's Chandra spacecraft, astronomers have found "danger zones" for worlds where planet-birthing disks are blasted with high-energy radiation from massive young stars and rapidly disintegrate.

A celestial light show illuminates a distant spiral galaxy, where a hidden supernova briefly outshines its stellar neighbors in a new image from the Hubble Space Telescope.

A fresh analysis of decades-old X-ray black hole jet data has revealed bright, lumpy features with mysterious speed changes.

An old galaxy reveals clusters of young stars that have formed in an unusually synchronized fashion, challenging the idea that star formation declines as galaxies age.

The neutron star 4U 1820-30 is one of the fastest spinning bodies in the universe, spinning at 716 times a second and erupting like an atomic bomb, NASA's NICER telescope has found.