A record-setting blast of gamma rays from a dying star in a distant galaxy has wowed astronomers around the world.
NASA scientists don't often learn that their spacecraft is at risk of crashing into another satellite...
Three unusually long-lasting stellar explosions discovered by NASA's Swift satellite represent a new class of gamma-ray bursts that likely arise from dying stars hundreds of times larger than the sun.
The Vela pulsar traces out a loopy, hypnotic pattern reminiscent of art produced by a children's toy in this video created with data from NASA's Fermi Gamma-ray Space Telescope.
NASA's Fermi Gamma-ray Space Telescope reveals the first clear-cut evidence the expanding debris of exploded stars produces some of the fastest-moving matter in the universe.
To say that Alice Harding, an astrophysicist at NASA's Goddard Space Flight Center in Greenbelt, Md., has a passion for pulsars is a bit of an understatement.
Theorists expect gamma-ray outbursts occur only near a galaxy's central black hole. A few rare observations suggested otherwise.
High-speed jets launched from active black holes possess fundamental similarities regardless of mass, age or environment, a new study finds.
The Fermi space telescope is now 10 times better at catching brief outbursts of high-energy light produced above thunderstorms.
Fermi has helped make the most accurate measurement of starlight in the universe, establishing the total amount that has ever shone.
Dr. Chryssa Kouveliotou, an astrophysicist at Marshall Space Flight Center, has been noted among Time Magazine's 25 most influential people in space.
The Committee on Space Research recently announced an award to NASA Astrophysicist Neil Gehrels for research in space science.
During a powerful solar blast on March 7, the Fermi telescope detected the highest-energy light ever associated with an eruption on our sun.
An analysis of two years' worth of data from Fermi is helping narrow down the list of what dark matter could be.
After three years in space, NASA's Fermi Gamma-ray Space Telescope is now extending its view of the high-energy sky into what to date has been largely unexplored territory.
Fermi has revealed gamma-rays in the remains of a supernova first seen in 1572.
Fermi's Large Area Telescope penetrates the dust of the Milky Way's Great Rift to reveal one of our galaxy's richest-known stellar construction zones.
This surprisingly powerful pulsar challenges existing theories about how these objects form.
Dr. Bill Atwood was awarded the prestigious prize for his work on the design, construction and use of Fermi's Large Area Telescope.
If Fermi's catalog of the universe were a recipe, the two major ingredients would be active galaxies and pure mystery.
Every 3.4 years, a pair of mismatched stars in the southern constellation Crux whisk past each other, shooting out extreme forms of light each time.
Teams of researchers using radio telescopes have produced the most detailed image of particle jets erupting from a supermassive black hole.
The Crab Nebula supernova remnant erupted in an enormous flare, five times more powerful than any flare previously seen from the object on April 12.
The Crab Nebula was once thought to be the steadiest high-energy source in the sky. Not so, according to new data from NASA satellites.
Scientists using NASA's Fermi Space Telescope have detected antimatter produced above thunderstorms on Earth, a phenomenon never seen before.
NASA's Fermi Gamma-ray Space Telescope unveiled a previously unseen structure centered on the Milky Way. The feature spans 50,000 light-years.
Julie McEnery and David Thompson of NASA's Fermi Space Telescope team have won the famous Lindsay award.
Astronomers using NASA's Fermi Gamma-ray Space Telescope have detected gamma-rays from a nova for the first time, a finding that stunned observers and theorists alike because unlike supernovae, these explosions are typically too small to see.
If our eyes could see radio waves, the nearby galaxy Centaurus A would be one of the biggest and brightest objects in the sky, nearly 20 times the apparent size of a full moon.
Fermi reveals that most extragalactic gamma radiation comes from unknown sources rather than from black-hole-powered jets from active galaxies—what astronomers once considered the most likely suspects.
New images of supernova remnants from NASA's Fermi Telescope bring astronomers a step closer to understanding the source of some of the universe's most energetic particles -- cosmic rays.
Astronomers have found evidence that two supernovae blasts received an extra boost from newborn black holes.
Radio astronomers have uncovered 17 millisecond pulsars in our galaxy that could be used as a kind of "galactic GPS" to detect gravitational waves passing near Earth.
Thanks to a series of flares that began September 15, a galaxy located billions of light-years away is now the brightest object in the gamma-ray sky.
The Fermi Telescope has made the first unambiguous detection of high-energy gamma-rays from an enigmatic binary system known as Cygnus X-3.
Two 'starburst' galaxies, plus a satellite of our own Milky Way galaxy, represent a new category of gamma-ray-emitting objects detected both by Fermi and ground-based observatories.
In one year of operation, NASA's Fermi Telescope has seen more than 1,000 sources of gamma-rays, but it still can't unseat Einstein's theory of relativity.
With NASA's Fermi Gamma-ray Space Telescope, astronomers now are getting their best look at those whirling stellar cinders known as pulsars.
Fermi, the successor to the Compton Gamma-Ray Observatory, is filling in the "gamma ray" picture with new finds of its own.
Fermi scientists revealed new details about high-energy particles implicated in a nearby cosmic mystery.
An international team of astronomers has used the world’s biggest radio telescope to look deep into the brightest galaxies that NASA’s Fermi Gamma-ray Space Telescope can see.
The gamma-ray sky comes alive in a movie made from Fermi Space Telescope data during its first three months of operations.
An international team of astrophysicists using telescopes on the ground and in space have uncovered surprising changes in radiation emitted by an active galaxy.
A new map combining nearly three months of data from NASA's Fermi Gamma-ray Space Telescope is giving astronomers an unprecedented look at the high-energy cosmos.
The first burst to be seen in high-res by the Fermi telescope had the greatest total energy, the fastest motions and the highest-energy initial emissions ever seen.
Astronomers using NASA's Swift satellite and Fermi Gamma-ray Space Telescope are seeing frequent blasts from a stellar remnant 30,000 light-years away.
The Fermi Space Telescope has discovered 12 new gamma-ray-only pulsars and detected pulses from 18 others.
A 10,000-year-old stellar corpse, called a pulsar, is the first one known that only "blinks" in gamma rays, as discovered by NASA's Fermi Gamma-ray Space Telescope.
At a teleconference on Aug. 26, 2008, NASA announced it was giving a new name to the Gamma-ray Large Area Space Telescope, launched June 11, 2008.
Link provided for viewing GLAST's position in orbit in order to view it in the night sky.
One of the priorities of the GLAST Burst Monitor science team has been to validate burst location information provided by the telescope.
Several bases of operations for NASA's Gamma-ray Large Area Space Telescope (GLAST) are gearing up for data from the recently launched satellite.
Less than a week after launch, NASA's Gamma-ray Large Area Space Telescope, or GLAST, is safely up-and-running well in orbit approximately 350 miles (565 kilometers) above Earth's surface.
NASA's Gamma-ray Large Area Space Telescope (GLAST) received the final "Ready to Go!" from all teams.
Scientists around the world are excited about all the things that GLAST is going to uncover after it launches on June 5 from Cape Canaveral Air Force Station, Fla.
NASA's Gamma-ray Large Area Space Telescope, or GLAST, is receiving finishing touches at the Cape Canaveral Air Force Station, near the beaches of eastern central Florida for its launch.
The powerful antenna system that will enable NASA's GLAST to communicate with stations on Earth has been successfully connected to the spacecraft.
The Delta II 7920-H rocket that will launch GLAST is in the process of being assembled on Launch Pad 17-B at Cape Canaveral Air Force Station, Fla.
On April 9, 2008, NASA opened the GLAST Burst Monitor Instrument Operations Center, the focal point for observing the universe's most powerful explosions.
GLAST seeks to decipher the genetic code of the universe.
After a nationwide search for junior science researchers on GLAST mission, three people have been chosen for these prestigious post-doctoral positions.
GLAST's twin solar panels, which will provide electrical power for GLAST after its launch, have been attached.
NASA's Gamma-ray Large Area Space Telescope, or GLAST, arrived Tuesday at the Astrotech payload processing facility near the Kennedy Space Center.
The first stage of the Delta II rocket that will be used to launch GLAST into space arrived at Hangar M at Cape Canaveral.
NASA announced the public will have a chance to suggest a new name for the cutting edge Gamma-ray Large Area Space Telescope observatory before it launches in mid-2008.
As part of their preparations for GLAST's May 16th launch, LAT collaborators rehearsed data-taking shifts with simulated data.
NASA's GLAST spacecraft arrived Tuesday at the Astrotech payload processing facility near the Kennedy Space Center to begin final preparations for launch.
In Hangar M on Cape Canaveral Air Force Station in Florida, the United Launch Alliance Delta II first stage is revealed after the cover was removed from the truck that delivered it.
The Naval Research Laboratory in Washington received a wonderful present this year: NASA's Gamma-ray Large Area Space Telescope.
The Gamma-ray Large Area Space Telescope has arrived for its final round of testing at the Naval Research Laboratory (NRL) in Washington.
The gently glowing moon is more than just a pretty ball in the sky—for gamma-ray astronomers, the moon could become a unique target for calibrating instruments such as the Gamma-ray Large Area Space Telescope (GLAST).
The Gamma-ray Large Area Space Telescope (GLAST) is scheduled for launch early next year, and although it will observe a great variety of interesting high-energy sources, one type of object in particular is expected to dominate the gamma-ray sky: a special class of active galactic nuclei known as "blazars."
During the week of October 8, 2007, the researchers and engineers who will operate the LAT and analyze its data rehearsed the activities they will undertake to activate and checkout the instrument during its first 60 days of orbit.
On Friday, October 19, 2007, the Large Area Telescope (LAT) Project awarded certificates of appreciation to the 58 members of the LAT Environmental Test team.
The GLAST-NOAO agreement will enable astronomers to propose for funding from GLAST to observe interesting objects in vastly different regions of the electromagnetic spectrum.
NASA's Gamma ray Large Area Telescope (GLAST) lives in a "clean room" while it awaits its December launch.
The National Radio Astronomy Observatory is teaming with NASA's upcoming Gamma-ray Large Area Space Telescope to allow astronomers to maximize their scientific payoff.
GLAST is one step closer to unveiling the mysteries of the high-energy universe.
A team of astronomers announced the first catalog of a new type of gamma-ray source, a dozen clouds of “relic” radiation from dead stars.
Astronomers have found a new class of objects in space that may be tremendously luminous, but are enshrouded in gas cocoons.