Astronomers have discovered the biggest explosion seen in the universe, originating from a super-massive black hole. Scientists reported Thursday that the blast came from a black hole in a cluster of ...

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.

This week’s naked-eye object is open cluster M25 in Sagittarius. Observers also know this object as IC 4725. You’ll find it 4.4° east-northeast of magnitude 3.8 Mu (μ) Sagittarii. At magnitude 4.6, ...