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Latest Gamma-ray astronomy Stories

Starlight Measured In Detail By Fermi
2012-11-01 13:50:08

[ Watch the Video: NASA's Fermi Explores the Early Universe ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers have made the most accurate measurement of starlight in the universe and have used this to establish the total amount of light from all of the stars that have ever shone. A team used data from NASA's Fermi Gamma-Ray Space Telescope to find the total sum of starlight in the universe, or the extragalactic background light (EBL). Gamma rays are the most...

Integral Space Observatory Celebrates Ten Years
2012-10-15 10:06:45

This week, ESA´s Integral space observatory celebrates ten years since launch on 17 October 2002. Integral, short for International Gamma-Ray Astrophysics Laboratory, is equipped with two gamma-ray telescopes, an X-ray monitor and an optical camera. All four of Integral´s instruments point simultaneously at the same region of the sky to make complementary observations of high-energy sources. Integral is often bathed in gamma-ray bursts, the death cries of massive stars that...

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2012-06-12 07:47:27

Lee Rannals for redOrbit.com NASA said that its Fermi Gamma-ray Space Telescope detected the highest-energy light ever associated with an eruption on the sun on March 7. The latest discovery, according to the space agency, is echoing in Fermi's new role as a solar observatory, which is a tool that is being used to understand solar outbursts. The March 7 flare was a class X5.4, and is the strongest eruption so far observed by Fermi's Large Area Telescope (LAT). "For most of Fermi's...

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2012-06-02 11:30:29

Students from across Europe have been selected as the winners of the ESA´s ℠Explore the high-energy Universe´ competition. Secondary school students were invited to choose from four projects relating to ESA´s Integral gamma-ray observatory in which they were challenged to Observe, Research, Design, or Build. To participate, students took on the roles of engineers, scientists, and astronomers to explore the extreme and ever-changing high-energy Universe, including...

Fermi Eyes 'Crazy-energetic Photons'
2012-03-19 03:40:04

[ Watch the Video ] The human eye is crucial to astronomy. Without the ability to see, the luminous universe of stars, planets and galaxies would be closed to us, unknown forever. Nevertheless, astronomers cannot shake their fascination with the invisible. Outside the realm of human vision is an entire electromagnetic spectrum of wonders. Each type of light--­from radio waves to gamma-rays--reveals something unique about the universe. Some wavelengths are best for studying black...

Fermi Reveals Gamma-ray Bursts' Highest Power Side
2012-02-20 03:58:19

Detectable for only a few seconds but possessing enormous energy, gamma-ray bursts are difficult to capture because their energy does not penetrate the Earth's atmosphere. Now, thanks to an orbiting telescope, astrophysicists are filling in the unknowns surrounding these bursts and uncovering new questions. The Fermi Gamma-Ray Space Telescope, formerly called the Gamma-Ray Large Area Space Telescope, launched on June 11, 2008. As part of its mission, the telescope records any gamma-ray...

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2011-10-18 09:45:39

[ Watch the Video ] NASA's Fermi team recently released the second catalog of gamma-ray sources detected by their satellite's Large Area Telescope (LAT). Of the 1873 sources found, nearly 600 are complete mysteries. No one knows what they are. "Fermi sees gamma rays coming from directions in the sky where there are no obvious objects likely to produce gamma rays," says David Thompson, Fermi Deputy Project Scientist from Goddard Space Flight Center. Gamma rays are by their very nature...

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2010-07-15 10:00:00

There are many cultural myths concerning black holes -- several of the myths are perpetuated by television and movies. Black holes have been portrayed as time-traveling tunnels to another dimension, or as cosmic vacuum cleaners sucking up everything in sight. Black holes are really just the evolutionary end points of massive stars. Somehow, this simple explanation makes them no easier to understand. On Thursday, July 15, NASA scientist Jerry Fishman from NASA's Marshall Space Flight Center...

2010-05-05 14:20:00

GREENBELT, Md., May 5 /PRNewswire-USNewswire/ -- Dr. Neil Gehrels, an astrophysicist at NASA's Goddard Space Flight Center, has been elected into the National Academy of Sciences (NAS), an honor considered to be one of the highest awarded to scientists and engineers. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO ) The honor, which also yielded 71 other newly elected members, was announced recently at the 147th annual meeting of the Academy. Dr. Gehrels pioneering...

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2010-04-01 15:40:00

If our eyes could see radio waves, the nearby galaxy Centaurus A (Cen A) would be one of the biggest and brightest objects in the sky, nearly 20 times the apparent size of a full moon. What we can't see when looking at the galaxy in visible light is that it lies nestled between a pair of giant radio-emitting gas plumes ejected by its supersized black hole. Each plume is nearly a million light-years long. NASA's Fermi Gamma-Ray Space Telescope maps gamma rays, radiation that typically packs...


Latest Gamma-ray astronomy Reference Libraries

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2004-10-19 04:45:43

Gamma-Ray Astronomy -- Gamma-ray astronomy is the astronomical study of gamma rays. Long before experiments could detect gamma rays emitted by cosmic sources, scientists had known that the universe should be producing these photons. Work by Feenberg and Primakoff in 1948, Hayakawa and Hutchinson in 1952, and, especially, Morrison in 1958 had led scientists to believe that a number of different processes which were occurring in the universe would result in gamma-ray emission. These...

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