Monster Galaxy from Ancient Universe Died Young

A monster galaxy is spotted from the ancient Universe — it lived fast and died young — what killed XMM-2599?

A monster galaxy from the early Universe, XMM-2599, lived out its life just a billion years after the Big Bang, before dying a mysterious death when the Universe was just 13 percent of its current age.

Galaxies like the Milky Way produce roughly one new star each year, but XMM-2599 developed a flurry of stars when it first formed, reaching a mass of more than 300 billion Suns. Star production then quickly shut down…