NASA is building up a map of the entire sky seen in X-rays, line by line with its NICER experiment.
In this image, numerous sweeping arcs seem to congregate at various bright regions. You may wonder: What is being shown? Air traffic routes? Information moving around the global internet? Magnetic fields looping across active areas on the Sun?
In fact, this is a map of the entire sky in X-rays recorded by NASA's Neutron star Interior Composition Explorer (NICER), a payload on the International Space Station.
https://www.eurekalert.org/pub_releases/2019-05/nsfc-nnm053019.php
Originally posted on Twitter.