Nearly 6 billion light-years away, one of the most massive galaxy clusters ever seen is birthing stars at an incredible rate, with its central member producing more than 700 suns per year in its cold, cold heart.
Nearly 6 billion light-years away, one of the most massive galaxy clusters ever seen is birthing stars at an incredible rate, with its central member producing more than 700 suns per year in its cold, cold heart.