This image combines data from four different space telescopes to create a multi-wavelength view of all that remains of the oldest documented example of a supernova, called RCW 86.

The bright, young star left of center gives NGC 1999 its brightness.

Saturn's moon Mimas appears near Saturn, dwarfed by its parent planet in this image.

This ALOS satellite image shows an area with extensive agricultural use in western Russia, with roads and rivers cutting through the cropland.

The galaxy I Zwicky 18, originally thought to be a young galaxy, actually seems to have formed around the same time as most other galaxies. The bluish-white knots in the heart of the galaxy are two major star-forming regions.

This composite image shows a superbubble in the Large Magellanic Cloud (LMC), a small satellite galaxy of the Milky Way, located about 160,000 light years from Earth.

This computer generated montage shows Neptune as it would appear from a spacecraft approaching Triton, Neptune's largest moon.

Artist's concept illustrates Kepler-47, the first transiting circumbinary system -- multiple planets orbiting two suns.

This new image of the luminous blue variable was taken by ESO's Very Large Telescope, yielding an incredible amount of detail.

New findings about an extraordinary galaxy cluster discovered by the National Science Foundation’s 10-meter South Pole Telescope.