Scientists studying a distant galaxy cluster have discovered the biggest explosion seen in the Universe since the Big Bang. The blast came from a supermassive black...
About 2.6 million years ago, an oddly bright light arrived in the prehistoric sky and lingered there for weeks or months. It was a supernova some...
There is a calculation suggesting that only one in a thousand massive galaxies is a relic of the early universe, conserving intact the properties it had...