Milky Way. "Every star we see in the sky is part of the Milky Way, but a brighter center exists some light-years away. The Milky Way is about light-years in diameter and contains 200 to 400 billion stars.
This infrared image from NASA's Spitzer Space Telescope shows the Helix nebula, a cosmic starlet often photographed by amateur astronomers for its vivid colors and eerie resemblance to a giant eye. 36 / 40 Photo by Comets Kick up Dust in Helix Nebula;
The Antennae galaxies, located about 62 million light-years from Earth. This composite image includes images from the Chandra X-ray Observatory (blue), the Hubble Space Telescope (gold and brown), and the Spitzer Space Telescope (red).
Star Cluster Pismis NGC Pismis 24 hangs over NGC a nebula about 8000 ly away in Scorpius. This picture showed that the brightest star in the cluster is in fact two stars in a tight binary orbit. Each star is about 100 times the Sun's mass.
Hubble photograph of the Sagittarius Star Cloud, providing this image of some of the oldest inhabitants of our galaxy
Cepheus, NGC 7129 is a rosebud-shaped reflection nebula of about 10 light-years across, located some 3,330 light-years away from Earth in the northern constellation of Cepheus. It is home to a young...