This image shows two companion galaxies, NGC 4625 (top) and NGC 4618 (bottom), and their surrounding cocoons of cool hydrogen gas (purple). The huge set of spiral arms on NGC 4625 (blue) was discovered by the ultraviolet eyes of NASA's GALEX.
Hubble Telescope Image: The Majestic Sombrero Galaxy - A brilliant white core is encircled by thick dust lanes in this spiral galaxy, seen edge-on. The galaxy is light-years across and 28 million light years from Earth.
Bright star-forming region NGC 346 is located light-years away in the Small Magellanic Cloud, a neighbouring dwarf galaxy of the Milky Way. - Credit: ESO/ESA/ JPL-Caltech/NASA/ D. Gouliermis (MPIA) et al.
The Butterfly Nebula - NGC 6302 (also called the Bug Nebula, Butterfly Nebula, or Caldwell is a bipolar planetary nebula in the constellation Scorpius. The structure in the nebula is among the most complex ever observed in planetary nebulae.
The Eridanus Void. This area shows almost no signs of cosmic matter, meaning no stars, planets, solar systems or clouds of cosmic dust. Researchers couldn't even find dark matter, which is invisible but measurable by matter once present in the region.
Within nebula DEM L 106 is a second nebula, N30B. The peanut-shaped cocoon of dust, called a reflection nebula, surrounds a cluster of young, hot stars. The bright, supergiant star at the top of the picture illuminates the dusty cocoon. Wispy filaments from DEM L 106 fill the rest of the image.