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welcome to glassed cast I'm Dave

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Thompson a deputy project scientist for

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glassed for a while we've been telling

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you about all the great things this

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revolutionary telescope will do well

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we're elated glassed is now in space it

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has a new name and it's keeping us very

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last June the last rose from a Florida

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launch pad on board a Delta two rocket

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and thundered into the sky launch day

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was very exciting that ride into space

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was the missions riskiest and most

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for two weeks following launch

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controllers carefully checked out the

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spacecraft's various systems could glass

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communicate properly did it know where

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it was pointing were the solar panels

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and batteries providing enough power

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once we knew we had a healthy spacecraft

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it was time to turn on the two science

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instruments the large area telescope or

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lap maps gamma rays over the entire sky

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every three hours and his glass main

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detector the other instrument is called

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the gamma-ray burst monitor or GBM it

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looks for spectacular flashes of gamma

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rays from among other things the birth

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of black holes far across the universe

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with the instruments checked out and

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calibrated there was one formality left

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give blast a proper name for more than

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12,000 suggestions NASA christened its

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newest observatory Jeremy gamma-ray

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Space Telescope the new name honors

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Nobel Prize winner Enrico Fermi a

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pioneer in high-energy physics and

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astrophysics his work provided the first

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insights into the powerful processes the

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telescope will help us better understand

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so what are we seeing with the Fermi

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telescope here's a quick look with its

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first four days of observations the LAT

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proved itself the remarkable instrument

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we knew it to be a detector on an

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earlier satellite took more than a year

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to record this level of detail much as a

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painters brush adds life to a scene with

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each stroke the lap adds another layer

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of detail with every orbit this bright

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band is the Milky Way the plane of our

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galaxy these gamma rays arise when

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high-velocity particles called cosmic

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rays collide with gas atoms in the

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galaxy's disc a small fraction of these

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gamma rays may come from the mutual

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annihilation of exotic particles

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scientists have proposed such

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undiscovered particles as a possible

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explanation

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nation for mysterious dark matter with

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our gamma ray vision some sources glow

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especially brightly these are pulsars

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the dense fast spinning and intensely

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magnetic leftovers of exploded stars the

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Veila pulsars the brightest persistent

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source in the gamma-ray sky although we

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don't know all of the details pulsars

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emit light house like beams of radiation

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when a beam sweeps past us we see the

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emission spike or pulse hence the name

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this animation of lat images shows the

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on-again off-again nature of the veil a

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pulsar it's gamma rays actually cycle

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about 20 times faster than shown here

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most of the 1800 pulsars we know about

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were first identified by their radio

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emissions but not this one named Jim

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Inga it was confirmed as a pulsar by X

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and gamma-ray satellites we suspect that

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there are many other radio quiet pulsars

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like it there radio beams don't

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intercept the earth but their gamma-ray

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pulses do in fact farrah me has already

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found one it lurks in this expanding

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shell of gas shown here at radio

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wavelengths formed when a star exploded

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about 10,000 years ago the shell is a

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everything about this X and gamma-ray

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source said it was a pulsar except no

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one had seen pulses at any other

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wavelengths but Jeremy detected them

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this is the first pulsar ever seen that

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blinks only in gamma rays it radiates

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more energy in fact in gamma rays than

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this is just the beginning we expect

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that Fermi will discover dozens of new

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pulsars within its first year the

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telescope is also giving us new insights

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into gamma ray bursts and the massive

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jets that erupt from distant galaxies