23 October 2013, 01:00 PM ET
Astronomer Edwin Hubble devised a method for identifying kinds of galaxies.
17 October 2013, 01:50 PM ET
In this stunning space wallpaper, taken with the Cassini wide-angle camera on June 6, 2012, the spacecraft looks toward the night side of Titan and sees sunlight scattering through the periphery of Titan's atmosphere and forming a ring of color.
17 October 2013, 10:01 AM ET
The most distant cosmic lens — a galaxy whose gravity warps and deflects light from an even more distant stellar nursery — has been discovered by an international team of astronomers.
16 October 2013, 01:45 PM ET
The largest star ever discovered may give scientists a better sense of how massive, dying stars seed the universe with the ingredients for rocky planets and even life.
16 October 2013, 12:10 PM ET
This stunning space wallpaper shows the Toby Jug Nebula, which is located about 1200 light-years from Earth in the southern constellation of Carina (The Ship’s Keel). More formally known as IC 2220, it is an example of a reflection nebula.
15 October 2013, 01:17 PM ET
This stunning space wallpaper, not unlike a pointillist painting, shows the star-studded center of the Milky Way towards the constellation of Sagittarius.
14 October 2013, 10:24 AM ET
The beautiful, petal-like shells of galaxy PGC 6240 are captured in intricate detail by the NASA/ESA Hubble Space Telescope, as seen in this stunning space wallpaper.
08 October 2013, 03:15 PM ET
The Milky Way shines brightly in two stunning images taken from the island of Malta.
04 October 2013, 01:54 PM ET
Many of the constellations and rich star fields of summer evenings past are still in evidence in the western heavens, while the brilliant yellow-white star Capella ascending from the northeast is a promise of even more dazzling stars to come.
03 October 2013, 09:36 AM ET
This space wallpaper, snapped by NASA/ESA Hubble Space Telescope, shows the star HD 184738, also known as Campbell’s hydrogen star.
02 October 2013, 05:16 PM ET
“Winner” of the “People and Space” category in the Royal Observatory Greenwich’s Astronomy Photographer of the Year 2013 exhibition, this space wallpaper is a deceptively simple shot of figures silhouetted against a rising Moon.
01 October 2013, 12:41 PM ET
“Runner Up” of the “Deep Space” category in the Royal Observatory Greenwich’s Astronomy Photographer of the Year 2013 exhibition, this beautiful space wallpaper shows Rho Ophiuchi and Antares Nebulae.
30 September 2013, 09:23 AM ET
“Winner” of the “Our Solar System” category in the Royal Observatory Greenwich’s Astronomy Photographer of the Year 2013 exhibition, this space wallpaper gives the viewer a window onto the elusive outer atmosphere of the Sun — the corona.
27 September 2013, 11:10 AM ET
“Winner” of the Robotic Scope category in the Royal Observatory Greenwich’s Astronomy Photographer of the Year 2013 exhibition, this space wallpaper beautifully reveals the great Orion Nebula.
26 September 2013, 10:23 AM ET
“Highly Commended” by the Royal Observatory Greenwich’s Astronomy Photographer of the Year 2013 exhibition, this amazing space wallpaper is a composite shot showing the progress of an annular eclipse in May 2013.
24 September 2013, 01:12 PM ET
The glowing jumble of gas clouds visible in this stunning space wallpaper make up a huge stellar nursery nicknamed the Prawn Nebula.
23 September 2013, 09:59 AM ET
This space wallpaper shows an example of a bipolar planetary nebula known as NGC 6537 taken with the New Technology Telescope at ESO’s La Silla Observatory.
20 September 2013, 10:00 AM ET
Lying more than 110 million light-years away from Earth in the constellation of Antlia (The Air Pump) is the spiral galaxy IC 2560, shown here in this stunning space wallpaper from NASA/ESA Hubble Space Telescope.
19 September 2013, 09:26 AM ET
The glittering specks in this cool space wallpaper, resembling a distant flock of flying birds, are the stars that make up the dwarf galaxy ESO 540-31.
12 September 2013, 06:00 AM ET
Using data from ESO telescopes, astronomers have found the center of our galaxy takes on a x-shaped appearance, that resembles a peanut. An animation of the Milky Way galaxy and simulation of a barred galaxy shows many angles of the area.
28 August 2013, 11:20 AM ET
The spectacular swirling arms and central bar of the Sculptor galaxy are revealed in this space wallpaper from NASA's Spitzer Space Telescope.
28 August 2013, 10:08 AM ET
Astronomers have found a twin star to Earth's own sun, only much older. The rare star is the oldest known "solar twin," and offers a peek at what Earth's star will look like in 4 billion years.
26 August 2013, 06:30 AM ET
Astronomers working with the Very Large Telescope in Chile plan to announce a "major result" Wednesday (Aug. 28).
23 August 2013, 03:08 PM ET
A stargazer snapped this beautiful composite image of the Milky Way and lunar halo over Malaysia.
22 August 2013, 01:27 PM ET
A piercingly bright curtain of stars is the backdrop for this beautiful space wallpaper taken by astronomer Håkon Dahle.
21 August 2013, 02:32 PM ET
The 'sound' created from a stars brightness can be used to determine it's size. A paper published in Nature shows how variations in these sounds are caused by the different ways in which hot gas wells up to the surface and cool gasses sink back down.
21 August 2013, 01:00 PM ET
The way a star flickers can shed light on the strength of gravity's pull on its surface, researchers say. And discovering more about a star's pull can yield key insights on its evolutionary state and on any planets that might orbit it, scientists added.
19 August 2013, 11:56 AM ET
Stargazers are thrilled over the surprise appearance of a star explosion, known as a nova, in the night sky last week, but there is more to this cosmic event than meets the eye.
19 August 2013, 09:28 AM ET
This beautiful space wallpaper portrays the galaxies NGC 799 (below) and NGC 800 (above) located in the constellation of Cetus (The Whale).
16 August 2013, 10:12 AM ET
How many rings do you see in this cool space wallpaper of the galaxy Messier 94, also known as NGC 4736? While at first glance one might see a number of them, astronomers believe there is just one.
13 August 2013, 04:25 AM ET
Astrophotographer Meldeine Sipes shot these stunning night sky photos during her family vacation to Sequoia National Park in California. "For the first time, we saw the night sky as nature intended," Sipes said.
09 August 2013, 03:22 PM ET
Facing due south this week about 90 minutes after sunset, we can see the star figure that is dedicated to the famed physician Aesculapius. It is the large constellation of Ophiuchus (The Serpent Holder).
06 August 2013, 04:33 PM ET
Gas Clouds' NGC 2014 (pink) and NGC 2020 (blue) reside next to each other, but are quite different. Their chemical make up (oxygen & hydrogen) and star temperatures create the glow. Located in the Large Magellanic Cloud, 163,000 light-years away.
05 August 2013, 11:45 AM ET
This beautiful space wallpaper shows spiral galaxy Messier 100, located in the southern part of the constellation of Coma Berenices, and lying about 55 million light-years from Earth.
01 August 2013, 05:05 PM ET
Astronomers using NASA's Spitzer Space Telescope have detected a system of young, blinking stars surrounded by a dusty "hula-hoop" of stellar leftovers that could one day form planets like the fictional "Tatooine" in Star Wars.
01 August 2013, 09:20 AM ET
Galaxies no longer producing stars (quenched galaxies) have long puzzled astronomers with how they grow. Now Hubble Space Telescope and European Southern Observatory's VISTA have shown that larger galaxies stopped producing stars later in life.