“ This is a deep image of the Sword of Orion - the three stars that make up the weapon hanging off the belt of this famous celestial hunter. The image showcases the amazing mix of physical and optical.
The Veil Nebula, known as the Cygnus Loop, is the visible trace left by a star which exploded 7500 yrs. At that time, the expanding cloud remained visible for weeks above the Earth's sky and bright as a crescent Moon
Complex planetary nebulas form when a star uses up all of the hydrogen in its core -- an event our Sun will go through in about five billion years. Image: X-ray: NASA/CXC/IAA-CSIC/N.Ruiz et al, Optical: NASA/STScI Caption: Chandra X-Ray Observatory