27 June 2015, 12:00 PM ET
Look skyward around 11 p.m. local time this week to see an ancient star pattern almost directly overhead: the hero of legends, Hercules.
26 June 2015, 01:02 PM ET
Astronomers may have discovered an exoplanet that has found the elixir to planetary youth — streams of radiation from its white dwarf star, which could have knocked billions of years off its apparent age.
24 June 2015, 02:23 PM ET
Astronomers have detected carbon smog permeating the interstellar atmospheres of early galaxies, confirming that these ancient galaxies were mostly dust free. The discovery should shed light on how galaxies grew in the universe's early days.
24 June 2015, 12:20 PM ET
As GJ 436b, an exoplanet, crossed the face of its star, the Hubble Space Telescope detected a decrease in ultraviolet light as a huge cloud of hydrogen departed the doomed planet’s atmosphere.
12 June 2015, 06:43 AM ET
The night sky features a swan, an eagle, a dove, a crane, a toucan, a peacock, a bird of paradise and even a mythical phoenix. And over toward the south as night falls during these late spring evenings is yet another: Corvus, the Crow.
12 June 2015, 06:30 AM ET
A skywatcher's guide to the constellation Ursa Minor, also known as the Little Dipper or the Little Bear. Most people have never seen the Little Dipper, simply because most of its stars are too dim to be viewed through light-polluted skies.
01 June 2015, 05:30 PM ET
Borg-like assimilation may not be an interstellar reality, but having a resilient software system is essential to ensure your starship can cope with any scenario in the depths of space.
28 May 2015, 10:35 AM ET
The appearance of high-power, super-fast jets of plasma from supermassive black holes at the core of galaxies is a sign of recent – or presently continuing – merger with with another galaxy. Such jets emit powerful radio waves in opposite directions.
22 May 2015, 07:01 AM ET
A newfound galaxy 12.5 billion light-years from Earth is the most luminous one known in the universe, blazing more brightly than 300 trillion suns. The engine behind the galaxy's brilliance may be a supermassive black hole, researchers said.
22 May 2015, 07:01 AM ET
Observations by NASA's Hubble Space Telescope have revealed a disk of gas nearly 3 trillion miles wide surrounding Nasty 1, suggesting that the star's strange appearance and behavior may stem from an ongoing act of cosmic cannibalism.
19 May 2015, 05:43 PM ET
The Southern Cross has long been a celestial landmark for explorers and travelers to the lands below the equator. You can see the famous constellation now, but you must go farther south than 25 degrees north latitude.
27 April 2015, 04:40 PM ET
21 April 2015, 01:38 PM ET
When a massive star dies, it re-seeds the universe with elements to form more complex stars. When astronomers witness these cataclysms, they begin to think differently about how the universe works. Watch ‘Secrets of the Universe’ on Hulu. http://www.
17 April 2015, 05:36 PM ET
Right now is a good time to look for Virgo, since the bright moon is not lighting up the evening sky. (Virgo may be very large, but most of her stars are rather dim.)
10 April 2015, 04:52 PM ET
Now that the bright moon has moved out of the evening sky, skywatchers have a great chance to view the early spring stars. And yet, even under dark skies, skywatchers will notice that there is something missing overhead: the Milky Way.
08 April 2015, 09:03 AM ET
A new photograph of a distant galaxy looks like it was the inspiration for the 'one ring' in 'The Hobbit,' but it's actually a cosmic phenomenon in which the light from one galaxy is bent into a circle by the gravity of another galaxy.
03 April 2015, 07:00 AM ET
NASA's Hubble Space Telescope has photographed a number of gas clouds that glow a ghostly green, thanks to radiation blasted out by superpowerful quasars. See the photos in this Hubble photo gallery.
03 April 2015, 07:00 AM ET
The eight objects betray the past presence of quasars, the most luminous objects in the universe, whose powerful beams of radiation lend the clouds their ethereal glow, researchers said.
25 March 2015, 02:01 PM ET
Giant winds from black holes can blast gas through galaxies at extraordinary speeds, pulling the plug on star formation, researchers say.
20 March 2015, 06:50 AM ET
Look southward just after the sky gets dark at this time of year, and you will be sure to see Sirius shining brightly. This is the brightest star in the sky, and marks the eye of the constellation called Canis Major, Latin for "the Large Dog."
10 March 2015, 03:00 PM ET
The star cluster is unique since it's located thousands of light-years away from the main disc of our galaxy.
05 March 2015, 02:01 PM ET
The fastest-known star in the Milky Way is on a path out of the galaxy, and new research suggests it was a supernova that gave it the boot.
03 March 2015, 08:47 AM ET
Scientists have found an early galaxy that produces more stars in a single day than the Milky Way creates in a year.
02 March 2015, 07:00 AM ET
As the calendar shifts into March, skywatchers' ship will really come in. The ship in question is the constellation Argo Navis, which can be seen at around 10 or 11 p.m. local time throughout March, low in the night sky near the southern horizon.
27 February 2015, 02:21 PM ET
It has long been assumed that the size of a supermassive black hole in a galaxy's core is intimately related to the number of stars that galaxy contains -- but it might not be that simple.
27 February 2015, 07:00 AM ET
A newfound cosmic object may be a long-sought missing link that could help flesh out the black hole family tree. NGC-2276-3c, which lies about 100 million light-years from Earth, appears to be an intermediate-mass black hole.
26 February 2015, 08:00 AM ET
The European Very Large Telescope's MUSE instrument took a deeper dive into the famous Hubble Deep Field and discovered more galaxies than the Hubble Space Telescope. MUSE data also reveals elements of galactic motion.
26 February 2015, 06:01 AM ET
Astronomers have just released a brand-new, best-ever 3D view of the deep universe, and it's a doozy.
25 February 2015, 07:00 AM ET
Although these "golden stars" were spotted during a search for an extraterrestrial galactic Internet, the researchers say intelligent aliens have nothing to do with their flickering patterns, as far as they can tell.
20 February 2015, 05:35 PM ET
A strange set of 48 galaxies in the Coma Cluster has very few stars, revealing that these galaxies are especially rich in dark matter. The galaxies may have been robbed of much of their star-forming gas early in their formation, researchers say.
20 February 2015, 12:43 AM ET
This spectacular space wallpaper shows ESO’s Paranal Observatory in Chile soon after sunset. The last rays of the day create a spectacular orange haze as they pass through the dusty lower levels of the atmosphere, setting a perfect scene.
18 February 2015, 02:29 PM ET
Explosions on the surface of a dying star may help solve the mystery of the presence of lithium in the galaxy.
18 February 2015, 06:30 AM ET
A spiral galaxy known as NGC 7714 drifted too close to a smaller, neighboring galaxy called NGC 7715. The merger bent both galaxies out of shape.
04 February 2015, 06:00 AM ET
While imaging the Trifid Nebula, Europe’s VISTA infrared telescope peered through our galaxy’s dusty center to reveal two new Cepheid Variable stars. Such stars brighten and fade predictably, giving astronomers a distance measuring tool.
02 February 2015, 03:00 PM ET
One of the least likely places you might think astronomers would learn about ancient supernovae is at the bottom of the ocean but scientists have done just that -- also dredging up a mystery.
28 January 2015, 06:20 PM ET
The stars and constellations seen from Mars would be similar to those seen from Earth, but the Red Planet's two moons would be quite a sight for Martian explorers.