In this zoomed-in detail of the Hubble image of Abell 370, the host galaxy where the 44 stars were ... [+] discovered appears several times: in a normal image (left), and a distorted image ...

PBS News Hour is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV ... of a young galaxy that formed 600 million years ago after the Big Bang and that has amassed ...

The Big Bang ... not produce galaxy clusters of the right size and shape today. These three issues are resolved with the theory of inflation — which is part of the broader Big Bang Theory.

Back when the Universe was new, following the Big Bang some ... after the Big Bang," writes a team led by astronomer Mengyuan Xiao of the University of Geneva in Switzerland. "Our finding offers key ...