The Crab Nebula is the remnant of a supernova which was observed almost 1000 years ago. Although it corresponds to one of the most studied celestial objects, its extension in very high energy ...

Emission nebulae are glowing, spread-out clouds of ionized gas that shine with their own light. In this image of NGC 2313, the bright star V565 at the center lights up a silvery curtain of gas and ...

The Crab Nebula, a supernova remnant nebula ... The red hue is evidence of ionized hydrogen, which gives off visible light at a wavelength of 656.3 nm. Likewise, the green is from a rare ...