Releases from NASA, NASA Galex, NASA's Goddard Space Flight Center, Hubble, Hinode, Spitzer, Cassini, ESO, ESA, Chandra, HiRISE, Royal Astronomical Society, NRAO, Astronomy Picture of the Day, Harvard-Smithsonian Center For Astrophysics, etc.
The Little Ghost Nebula - Courtesy Nasa/Hubble Heritage
A dying star expels its outer layers, creating a planetary nebula . so called because it resembles a planet when seen with a small telescope. NGC 6369's blue-green ring marks the location where energetic ultraviolet light has stripped electrons from oxygen atoms in the gas.
Asteroid Ida - Courtesy Nasa/JPL
Black Widow Nebula - Courtesy Nasa/JPL
NGC 1512 - Courtesy Nasa/JPL
Vela Pulsar X Ray - Courtesy Nasa/JPL
The Helix Nebula NGC 7293 - Courtesy Nasa/Esa
This detailed picture of the Helix Nebula shows a fine web of filaments, like the spokes of a bicycle, embedded in the colorful red and blue gas ring around this dying star. The Helix Nebula is one of the nearest planetary nebulae to Earth, only 650 light years away.
Alfa Centaurus - Courtesy Nasa/JPL
Nebula IC 2944
Dark clouds of dust, called globules, are silhouetted against nearby, bright stars. Little is known about the globules, except that they are generlly associated with areas of star formation.
Hot Gas Bubble Eject by Binary Star XZ Tauri
Bow shock near Young Star in the Orion Nebula
Saturn's satellite Phoebe