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.
03 February 2014, 01:34 PM ET
This space wallpaper is an artist's impression based on the first ever map of the weather on the surface of the nearest brown dwarf to Earth.
31 January 2014, 10:39 AM ET
The left-front wheel of NASA's Curiosity Mars rover shows dents and holes in this cool space wallpaper taken during the 469th Martian day, or sol, of the rover's work on Mars (Nov. 30, 2013).
31 January 2014, 08:31 AM ET
NASA sponsored DiskDetective.org allows the public to sift through data from the Wide-field Infrared Survey Explorer (WISE) mission to discover embryonic planetary systems. WISE has measurements of more that 745 million objects to be investigated.
31 January 2014, 06:40 AM ET
Using a telescope for the first time isn't always as easy as it sounds, but fear not! This primer will get you started so you can not only enjoy 'first light,' but also get your new scope ready for searching out countless wonders in the night sky.
30 January 2014, 04:10 PM ET
This space wallpaper shows a NASA NEOWISE mission image of comet C/2013 A1 Siding Spring, which is slated to make a close pass by Mars on Oct. 19, 2014.
29 January 2014, 10:31 AM ET
This stunning space wallpaper shows the Whirlpool Galaxy, also known as M51 or NGC 5194, which is one of the most spectacular examples of a spiral galaxy.
29 January 2014, 06:48 AM ET
The night sky is becoming brighter and brighter, thanks to human population growth and inefficient, improperly installed lighting. But you can help stem this tide.
28 January 2014, 09:47 AM ET
The cosmic doppelgangers seen in the fascinating space wallpaper make up a double quasar known as QSO 0957+561, also known as the "Twin Quasar", which lies just under 14 billion light-years from Earth.
27 January 2014, 11:06 AM ET
This stunning space wallpaper is a false-color image from Japan’s ALOS satellite acquired over part of southern Kenya and the border with Tanzania. Mount Kilimanjaro in Tanzania can be seen in the lower-left corner.
24 January 2014, 10:01 AM ET
More than 100 asteroids were captured in this fascinating space wallpaper from NASA's Wide-field Infrared Survey Explorer, or WISE, during its primary all-sky survey.
23 January 2014, 05:22 PM ET
This cool space wallpaper shows a prototype Polish-built plasma thruster during test firing within an airless chamber at ESA’s Propulsion Laboratory.
22 January 2014, 10:20 AM ET
The VLT Survey Telescope at ESO's Paranal Observatory in Chile has captured this richly detailed space wallpaper of the Lagoon Nebula. This giant cloud of gas and dust is creating intensely bright young stars, and is home to young stellar clusters.
22 January 2014, 06:00 AM ET
110 light-years across and 5000 lights year from Earth, the Lagoon Nebula (M8, NGC 6523) is one of just two star-forming regions visible to the unaided eye from the northern hemisphere. Europe's VLT Survey Telescope in Chile capture these images.
21 January 2014, 02:16 PM ET
This space wallpaper is an artist's illustration showing one of three newly discovered planets in the star cluster Messier 67. Image released Jan. 15, 2014.