X-ray image of universe reveals almost 1 million high-energy objects: ‘These are mind-blowing numbers’


The first data released to the public from the eROSITA sky survey comprises an X-ray view of half the sky over Earth, encompassing almost a million high-energy cosmic sources, including over 700,000 supermassive black holes.

This catalog, dubbed the “eROSITA All-Sky Survey Catalogue (eRASS1)” was published on Thursday (Feb. 1). It constitutes the largest-ever catalog of the universe’s most powerful sources of energy, like exploding massive stars and black hole-powered active galactic nuclei that shine brightly in X-rays. The release also details the largest known structures in the universe — cosmic web filaments of hot gas that connect galaxies in clusters.  

Leave a Comment