The biggest explosion seen in the universe has been found. This record-breaking, gargantuan eruption came from a black hole in a distant galaxy cluster hundreds of millions of light years away.

An unlucky massive star approaches a supermassive black hole. Credit: University of Hawaiʻi Astronomers from the University of Hawaiʻi's Institute for Astronomy (IfA) have discovered the most ...

Here are the largest objects and phenomena we've observed in the universe so far. For the sake of variety, we've divided it into four categories: planets, stars, galaxies, and structures (phenomena ...

A giant star that is still being consumed by a supermassive black hole may have caused the largest flare of its kind ever seen, astronomers say.

Scientists have released a new study on the arXiv preprint server that catalogs the universe by mapping huge clusters of galaxies. These clusters are some of the largest known objects in the ...