X-Ray Probe Spots Tiny Flares Heating The Sun
Sensitive detectors aimed at the sun show how tiny flares could contribute to its heating processes.By Evan Thomas | July 9, 2015
Typically, you shouldn't point telescopes at the sun — you could go blind. But NASA makes an exception with its Nuclear Spectroscopic Telescope Array, or NuSTAR.
NuSTAR, launched in 2012, is an orbiting X-ray observatory originally designed to track distant supernovas and black holes. (Video via NASA)
But it can also collect X-ray images of our own sun in unprecedented detail. When its data is combined with readings from the ultraviolet Solar Dynamics Observatory, you get this: (Video via NASA)