Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

    JUST WATCHED

    Record-breaking galaxy cluster

MUST WATCH

Record-breaking galaxy cluster

Scientists announce the discovery of a galaxy cluster that produces 740 stars per year. CNN's John Zarrella reports.

Record-breaking galaxy cluster

Scientists announce the discovery of a galaxy cluster that produces 740 stars per year. CNN's John Zarrella reports.