AmericaSpace Launch Countdown

Next Launch AFSPC-4 on a Delta 4 - Medium+ rocket from Cape Canaveral AFB, FL scheduled for 24 Jul 14 22:59:00 GMT

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A Light in the Dark? Observations of Milky Way's Center Hint at Existence of Dark Matter

A view of the entire gamma-ray sky from the Fermi Space Telescope, shaded to emphasize the center of the Milky Way. The inset is a map of the galactic center with known sources removed, which reveals the gamma-ray excess (red, green, and blue) found there. This excess emission is consistent with annihilations from some [...]

Fermi Gamma-Ray Telescope Embarks on Second Mission of Discovery

The maps in this animation show how the sky looks at gamma-ray energies above 100 million electron volts (MeV) with a view centered on the north galactic pole. The first frame shows the sky during a three-hour interval prior to GRB 130427A. The second frame shows a three-hour interval starting 2.5 hours before the [...]

Countering the Threat Posed by Orbital Debris

In this computer simulation, the sheer amount of orbital debris becomes apparent—as does the need to find a way to prevent it. Image Credit: NASA

There’s a lot of junk up there. Around 20,000 bits and pieces of satellites and old rocket parts, bigger than 5 cm (2 inches) across, are floating around in [...]

NASA's Fermi, Swift See 'Shockingly Bright' Burst

The maps in this animation show how the sky looks at gamma-ray energies above 100 million electron volts (MeV), with a view centered on the north galactic pole. The first frame shows the sky during a three-hour interval prior to GRB 130427A. The second frame shows a three-hour interval starting 2.5 hours before the [...]

Galaxy’s Gamma-Ray Flares Erupted From Its Black Hole

Prior to its strong outbursts in 2011, blazar 4C +71.07 was a weak source for Fermi’s LAT. These images centered on 4C +71.07 show the rate at which the LAT detected gamma rays with energies above 100 million electron volts (lighter colors equal higher rates). The image at left covers 2.5 years, from the [...]

Fermi Improves its Vision for Thunderstorm Gamma-Ray Flashes

Photo Credit: NASA / Jim Grossman

WASHINGTON — Thanks to improved data analysis techniques and a new operating mode, the Gamma-ray Burst Monitor (GBM) aboard NASA’s Fermi Gamma-ray Space Telescope is now 10 times better at catching the brief outbursts of high-energy light mysteriously produced above thunderstorms.

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