The central star in this image is nicknamed “Nasty 1,” derived from its catalog name of NaSt1. 😆 A glowing disk of gas surrounds the bright star in this 2013 image from the Hubble Space Telescope. Nasty 1 is thought to be a massive, rapidly-evolving star weighing well over 10 times the mass of our sun. The star is losing its hydrogen-filled outer layers quickly, exposing its super-hot and extremely bright helium-burning core. Nasty 1 is thought to have a companion, and gravitational interactions between them may have created the gas disk. Both stars are heavily obscured by gas and dust in the disk. The system is about 10,000 light-years from Earth. Credit: NASA, ESA, and J. Mauerhan (University of California, Berkeley). ALT TEXT: A bright blue disk stretching from the bottom left to the top right sits against a dark blue background. The disk appears to be made of gas circling around an even brighter blue center.













