Scientists Have Created an X-Ray Map of the Sky

Though we can’t see it, a lot of physical activity happens across different wavelengths of the electromagnetic spectrum. X-rays zip around the night sky as a result of cosmic phenomena. Finding out from where these rays blast off helps us to understand more about the events in the universe, such as the ones that dictate the life and death of stars and the formation of planetary systems.

Scientists at the Max Planck Institute for Extraterrestrial Physics used data from the now-defunct ROSAT satellite to catalog the collective distribution of x-rays in the sky into one map.

Each dot on the map represents the x-ray source that was measured by satellite. The size represents the brightness of the ray, while the color represents the actual wavelength of the signal on the electromagnetic spectrum. The brightest dots are indicative of very powerful celestial events, like black holes, giant galaxy cultures, and supernovas.


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