The faraway Phoenix galaxy cluster may be the biggest and brightest such structure ever discovered, and it's forming stars at an unprecedented rate, scientists announced today (Aug. 15).
In Pictures: Where stars form
Here's a by-the-numbers look at the Phoenix cluster — formally known as SPT-CLJ2344-4243 — which researchers say could yield key insights into how galaxies and colossal clusters evolve:
2.5 quadrillion: How many times more massive the Phoenix cluster is than our own sun. This may be an all-time record for galaxy clusters — the most massive structures in the universe, composed of hundreds or thousands of individual galaxies bound together by gravity — researchers said.