13 March 2014, 07:46 AM ET
Hundreds of “rogue” wandering black holes may dwell in the Milky Way – and now Harvard University researchers say they know how to detect them. The discovery of these strange objects could shed light on the formation of the Milky Way and other galaxies.
12 March 2014, 01:48 PM ET
This space wallpaper is an artist’s impression showing the yellow hypergiant star HR 5171. This is a very rare type of star with only a dozen known in our galaxy. Its size is over 1300 times that of our Sun — one of the largest ten stars found so far.
11 March 2014, 04:08 PM ET
A nearly full Rhea shines in the sunlight in this stunning space wallpaper taken in visible light with the Cassini spacecraft’s narrow-angle camera on Sept. 10, 2013. Rhea (949 miles, or 1,527 kilometers across) is Saturn's second largest moon.
10 March 2014, 11:33 AM ET
Only 12 million years old, or less than three-thousandths of the age of the Sun, Beta Pictoris, as seen in this space wallpaper, is 75 percent more massive than our parent star.
07 March 2014, 01:00 PM ET
This space wallpaper from the Hubble Space Telescope shows the rare sight of the asteroid P/2013 R3 breaking apart. This image, the first in a series, was taken on Oct. 29, 2013.
06 March 2014, 12:42 PM ET
As spiral galaxy ESO 137-001 zooms through the super hot gas of the Norma cluster, much of it's own gas is pulled away in a process called 'ram pressure stripping. The threads of gas left behind give birth to bright young stars, seen here in blue.
06 March 2014, 11:07 AM ET
The spiral galaxy ESO 137-001 looks like a dandelion caught in a breeze in this stunning space wallpaper from Hubble Space Telescope.
05 March 2014, 03:20 PM ET
Astronomers have calculated how fast a distant supermassive black hole rotates, clocking it at nearly half the speed of light. A fortuitious lineup of cosmic objects allowed scientists to measure the mind-boggling spin rate.
05 March 2014, 12:26 PM ET
Spinning 390 times a second, the "black widow" pulsar PSR J1311−3430 periodically swings its radio (green) and gamma-ray (magenta) beams past Earth in this amazing space wallpaper.
04 March 2014, 02:36 PM ET
This space wallpaper is an illustration depicting the amount of space junk currently orbiting Earth.
04 March 2014, 07:00 AM ET
The detection of eight new planet candidates implies that virtually all red dwarfs throughout the galaxy have planets, and at least 25 percent of these stars in the sun's own neighborhood host habitable-zone "super-Earths," researchers said.
03 March 2014, 12:25 PM ET
This dazzling space wallpaper from ESO’s La Silla Observatory in Chile shows the bright star cluster Messier 7.
28 February 2014, 03:30 PM ET
This space wallpaper is a view of the microquasar MQ1—a black hole in the galaxy M83—as it appeared to the Hubble Space Telescope's Wide Field Camera 3.
28 February 2014, 02:56 PM ET
The now-famous supernova that erupted in neighboring galaxy M82 last month is a unique opportunity to study an exploding star up-close. However, SN 2014J isn’t any old supernova, it turns out that it’s a little bit weird.
27 February 2014, 09:38 AM ET
This cool space wallpaper shows a composite view of the giant elliptical galaxy NGC 1399. The stellar component, as observed at optical wavelengths, is shown in white at the center of the image.
26 February 2014, 02:14 PM ET
A powerful new technique for hunting alien planets yields a major new crop of new worlds. See how it helped NASA's Kepler Space Telescope confirm the existence of 715 new alien planets to nearly double the known list of exoplanets.
26 February 2014, 11:58 AM ET
Powerful jets generated by supermassive black holes could be quenching star formation in elliptical galaxies, forcing them to appear "red and dead," a new study reports.
26 February 2014, 10:29 AM ET
This stunning space wallpaper shows a small part of the Large Magellanic Cloud, one of the closest galaxies to our own. This collection of small baby stars, most weighing less than the Sun, form a young stellar cluster known as LH63.
25 February 2014, 12:25 PM ET
Roguish runaway stars can have a big impact on their surroundings as they plunge through the Milky Way galaxy. Their high-speed encounters shock the galaxy, creating arcs, as seen in this space wallpaper of speedster star Kappa Cassiopeiae, or HD 2905.
24 February 2014, 03:46 PM ET
This space wallpaper shows a model of the interstellar magnetic fields — which would otherwise be straight — warping around the outside of our heliosphere. The image is based on data from NASA's Interstellar Boundary Explorer.
21 February 2014, 05:25 PM ET
Inpouring rivers of hydrogen gas could explain how spiral galaxies maintain the constant star formation that dominates their hearts. Scientists observed a tenuous filament of gas streaming into the galaxy NGC 6946, known as the Fireworks Galaxy.
21 February 2014, 10:14 AM ET
This fascinating Chandra X-Ray Observatory space wallpaper of the young star cluster NGC 346 highlights a heart-shaped cloud of 8 million-degree Celsius gas in the central region.
19 February 2014, 03:07 PM ET
This stunning space wallpaper is the first map of radioactivity in a supernova remnant, the blown-out bits and pieces of a massive star that exploded.
19 February 2014, 11:44 AM ET
In this space wallpaper of a dune field on Mars in a large crater near Mawrth Vallis, some of the dunes appear to be in a V-shaped formation. For dune fields, the spacing of individual dunes is a function of sand supply, wind speed, and topography.
18 February 2014, 03:37 PM ET
Observations by NASA's Hubble Space Telescope reveal that the central part of the Large Magellanic Cloud galaxy completes one rotation every 250 million years — the same time it takes the sun finish a lap around the core of our own Milky Way.
14 February 2014, 10:12 AM ET
NASA's Cold Atom Laboratory utilizes a magnetic trap that confines particles, allowing them to cool to temperatures just barely above absolute zero as seen in this space wallpaper.
13 February 2014, 01:07 PM ET
This space wallpaper shows Jupiter's moon Ganymede centered at 200 west longitude. This mosaic (right) served as the base map for the geologic map of Ganymede (left).
12 February 2014, 01:22 PM ET
This stunning space wallpaper is a composite of 25 separate images spanning the period of Feb. 11, 2013 to Feb. 11, 2014.
11 February 2014, 09:27 AM ET
This space wallpaper combines a photograph of seasonal dark flows on a Martian slope with a grid of colors based on data collected by a mineral-mapping spectrometer observing the same area. Image released Feb. 10, 2014.
10 February 2014, 01:42 PM ET
This vivid space wallpaper shows a region of the planet’s northern hemisphere known as Hephaestus Fossae – after the Greek god of fire – that was imaged by the high-resolution stereo camera on ESA’s Mars Express orbiter on Dec. 28, 2007.
07 February 2014, 02:20 PM ET
This north-looking space wallpaper, acquired on Jan. 4, 2014, by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft, shows the Sochi Olympic Park Coastal Cluster in Russia.
07 February 2014, 07:11 AM ET
Using data from the Hubble Space Telescope and other observatories, astronomers are learning why some massive galaxies hit their peak young and quit making stars when the universe was less than a quarter of its current age.
06 February 2014, 11:24 AM ET
A dramatic, fresh impact crater on Mars dominates this spectacular space wallpaper taken by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter on Nov. 19, 2013.
05 February 2014, 12:05 PM ET
The faint spot at the center of this space wallpaper from ESO's Very Large Telescope is the Near-Earth Object 2009 FD. It may look insignificant, but there was a possibility that this asteroid would collide with the Earth in the future.
04 February 2014, 02:12 PM ET
This stunning space wallpaper shows a rainbow of lunar transits as seen by NASA's Solar Dynamics Observatory. The observatory watches the sun in many different wavelengths of light, which are each colorized in a different color.
04 February 2014, 11:53 AM ET
The James Webb Space Telescope will be able to spot multiple objects at the same time with its NIRspec instrument, the first for a satellite spectrometer.