More ideas from Classic
In August of 2007, astronomers located a gigantic hole in the universe. This empty space, stretching nearly a billion light-years across, is devoid of any matter such as galaxies, stars, and gas, and neither does it contain the strange and mysterious dark matter, which can be detected but not seen. The large void in the Constellation Eridanus appears to be improbable given current cosmological models. A radical and controversial theory proposes that it is a "universe-in-mass black hole"

In August of 2007 astronomers located a gigantic hole in the universe. This empty space, stretching nearly a billion light-years across, is devoid of any matter. A radical and controversial theory proposes that it is a "Universe-in-mass Black hole"

This NASA image shows NGC 5194. M51's stretch of over 60,000 light-years dwarf its companion galaxy, NGC 5195. Credit: Hubble Space Telescope, NASA.

Here are two more nebula galaxies. The pair are about 31 million light-years apart. Not far in the sky from the handle of the Big Dipper, they officially lie within the boundaries of the small constellation Canes Venatici.

The "Black Eye" galaxy, so named because an ancient cosmic smashup produced a dark ring and a roiling, conflicted interior. (Reuters / NASA)

The Black Eye Galaxy (Messier is a spiral galaxy with an apparent magnitude of lying approximately 24 million light years from Earth. It is sometimes also called the Sleeping Beauty Galaxy or Evil Eye Galaxy.

Cassiopeia -- New Photo Reveals ‘Ghostly’ Green Nebula in Deep Space An amazing new photo from a telescope in Chile has captured the most detailed view yet of a green glowing blob 3,300 light-years away from Earth. Credit: ESO The new image, released today (April 10) by the European Southern Observatory

Cassiopeia -- New Photo Reveals ‘Ghostly’ Green Nebula in Deep Space An amazing new photo from a telescope in Chile has captured the most detailed view yet of a green glowing blob light-years away from Earth. Credit: ESO The new image, released toda