Daniel CleryA telescope designed to study the universe’s mysterious dark energy released its first all-sky image today (pictured), showing what we would see if we had x-ray eyes.
After half a year of observing, the scope—known as eROSITA (extended Roentgen Survey with an Imaging Telescope Array)—has already logged more than 1 million objects that shine in the x-ray spectrum, including black holes gobbling matter, compact burned-out stars like white dwarfs and neutron stars, and gas between stars so hot that it gives off an x-ray glow.