NASA discovers a surprisingly massive galaxy cluster 2 billion years earlier than supposed

[Redaktion]

Two powerful NASA observatories looked deeply into a patch of sky and found a galaxy cluster forming only about one billion years after the Big Bang. Scientists never expected to find something as massive as a galaxy cluster at such an early time in the universe's existence.

https://www.notebookcheck.net/NASA-discovers-a-surprisingly-massive-galaxy-cluster-2-billion-years-earlier-than-supposed.1217297.0.html