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.
01 August 2013, 09:01 AM ET
New observations from NASA's Hubble Space Telescope have helped astronomers solve a longstanding mystery about galaxy evolution. It turns out that ancient galaxies stopped forming stars at a smaller size than their younger cousins did.
31 July 2013, 12:47 PM ET
A mysterious spiral of doom — okay, just a spiral-shaped galaxy — has been captured in a new image by the Hubble Space Telescope.
30 July 2013, 11:00 AM ET
Astrophotographer Bob Franke captured this image of stunning barred spiral galaxy Messier 109 from Focal Pointe Observatory in Chino Valley, Ariz.
29 July 2013, 07:01 PM ET
A newly discovered way to determine the spin of supermassive black holes could help shed light on the evolution of these bizarre objects and the galaxies they anchor. Astronomers used a European spacecraft to estimate one black hole's rotation rate.
28 July 2013, 09:04 AM ET
Would you like fries with that? An avid astrophotographer ordered up one mouth-watering image of the Hamburger Galaxy in this latest night sky photo. Alessandro Falesiedi captured this image from Italy.
26 July 2013, 11:20 AM ET
The sun-approaching Comet ISON floats against a seemingly infinite backdrop of numerous galaxies and a handful of foreground stars in this amazing space wallpaper taken in April 2013 by NASA's Hubble Space Telescope.
25 July 2013, 02:00 PM ET
Scientists have uncovered a new key to understanding the strange workings of neutron stars — objects so dense they pack the mass of multiple suns into a space smaller than a city.
24 July 2013, 05:30 PM ET
Clear skies over Jadwin, Missouri beckoned avid night sky photographer Victor Rogus to shoot this spectacular black-and-white photo of the Milky Way.
24 July 2013, 01:01 PM ET
Fast-paced star formation in some galaxies can starve future star generations, preventing galaxies from massive growth, scientists say. See how it works.
23 July 2013, 01:18 PM ET
Veteran night sky photographer Jeff Berkes captured this spectacular view of the northern lights with lightning, a Bootid meteor and the Milky Way Galaxy. See how Berkes made the stunning image and his thoughts on the night sky vista.
22 July 2013, 09:57 AM ET
This striking cosmic whirl is the center of galaxy NGC 524, as seen in this fascinating space wallpaper. This galaxy is located in the constellation of Pisces, some 90 million light-years from Earth. NGC 524 is a lenticular galaxy.
19 July 2013, 03:00 PM ET
The glowing arc of the Milky Way points to the great ruins of the Incan Empire, Machu Picchu, in this vivid night sky image. Thomas O'Brien took this photo in early July 2013 from the summit of Putucusi Mountain in Peru.
19 July 2013, 02:21 PM ET
This space wallpaper showcases the ancient globular cluster 47 Tucanae, a dense swarm of up to a million stars. The image at left shows the entire cluster, which measures about 120 light-years across.
17 July 2013, 04:30 PM ET
A night sky photographer takes a stunning photo of an aurora over Mt. Katahdin in Maine.
17 July 2013, 02:43 PM ET
In this space wallpaper—among a crowd of face- and edge-on spiral, elliptical, and irregular galaxies in the constellation of Virgo—lies NGC 4866, which is a lenticular galaxy situated about 80 million light-years from Earth.
15 July 2013, 04:13 PM ET
Observations of the dark cloud SDC 335.579-0.292 using the Atacama Large Millimeter/submillimeter array (ALMA) have given astronomers the best view yet of a monster star in the process of forming, as seen in this stunning space wallpaper.
15 July 2013, 09:08 AM ET
Observations of planetary nebula NGC 2392 by the Chandra and Hubble Space Telescopes reveals the complexities of the death of a star like our own. The Sun still has about 5 billion years before it suffers a similar fate.
10 July 2013, 05:02 PM ET
A giant radio telescope in Chile has captured amazing baby photos of what will eventually be a colossal star 11,000 light-years from Earth. Even more shocking: It's still growing, scientists say.
09 July 2013, 11:44 AM ET
This NASA/ESA Hubble Space Telescope space wallpaper shows the planetary nebula IC 289, located in the northern constellation of Cassiopeia.
09 July 2013, 07:00 AM ET
Night sky photographer Mike Taylor snaps two stunning images of the Milky Way over rural Maine. See how the veteran astrophotographer did it and with what equipment in this space photos glimpse.
08 July 2013, 09:40 AM ET
A look at these weird, light-gobbling cosmic monsters.