Fly about 2,600 light-years to Hubble Space Telescope imagery of the Cygnus loop nebula. See images from 2001 and 2020. Credit: NASA, ESA, STScI Acknowledgments: NSF's NOIRLab, Akira Fujii , Jeff ...

To celebrate Hubble's 26th birthday photographing the universe, NASA released awesome images the telescope captured of the "Bubble Nebula" — which looks like a giant soap bubble in space.

Helix Nebula: This a planetary nebula, which is formed when a star like the Sun runs out of fuel, expands and its outer layers puff off, and then the core of the star shrinks. Orion Nebula ...