The object, named NGC 6099 HLX-1, first appeared in 2009. Chandra caught the bright X-ray flash near the galaxy’s outskirts.

Early-career researchers’ access to neutron-beam instruments jumped from 61% to 78% at one Australian facility.

Astronomers may have found a rare intermediate-mass black hole outside galaxy NGC 6099—offering clues about how bigger black holes form.

The James Webb Telescope has proven that everything we thought we knew about space might be wrong. Launched just a few years ...

Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space ...

He recently added a new mystery to the list: Is China quietly building the world’s biggest telescope? He would like to know, ...

The Very Large Telescope in Chile has found, for the first time, an infant planet nestled in spiral arms of dust around a ...