About 550 light-years from Earth, Chi Cygni, a star like our Sun, is writhing in its death throes. It is now so large that it would swallow every planet out to Mars. (Artist rendering, credit: ESO/L. Calçada)
This image from a 3D simulation shows how winds from the hot, young protostar W75N(B)-VLA2 evolved from pushing material around the star in a fairly even, spherical way to a column of material that extends from the star's poles.
The Sombrero Galaxy - 28 million light years from Earth - was voted best picture taken by the Hubble telescope. The dimensions of the galaxy, officially called M104, are as spectacular as its appearance. It has 800 billion suns and is 50,000 light years across
Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretch 4 billion light-years from end to end. The structure is a light quasar group (LQG), a collection of extremely luminous Galactic Nulcei powered by supermassive central black holes!
Giant Arc of Light --A Mystery Observed Behind a Super-Massive Galaxy 10 Billion Light Years Away June 27, 2012 Astronomers using NASA's Hubble Space Telescope have found a puzzling arc of light behind an extremely massive cluster of galaxies residing 10 billion light-years away.
Wolf-Rayet Nebula is a nebula which surrounds a Wolf-Rayet star. There are different types of WR-nebula, based on their formation mechanism: 1.HII regions 2.ejecta-type nebulae 3.wind-blown bubbles 4.neutral hydrogen voids and shells (may be associated gas). The nebula shown is a 'wind-blown bubbles' type.
ESO lately released a photo of the newly-discovered galaxy SMM J2135-0102, which was found when astronomers were observing a massive galaxy cluster with the Atacama Pathfinder Experiment telescope. The galaxy is so distant that we see it as it was 10 billion years ago, and it is the brightest very distant galaxy ever seen at submillimetre wavelengths. Astronomers estimate that SMM J2135-0102 is producing stars at a rate that is equivalent to about 250 suns per year.