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Shedding Light on Dark Gamma Ray Bursts

Shedding Light on Dark Gamma Ray Bursts

Gamma Ray Bursts (GRBs) are among the most energetic phenomenon astronomers regularly observe. These events are triggered by massive explosions and a large amount of the energy if focused into narrow beams that sweep across the universe. These beams are so tightly concentrated that they can be seen across the visible universe and allow astronomers to probe the universe's history. If such an event happened in our galaxy and we stood in the path of the beam, the effects would be pronounced and may lead to large extinctions. Yet one of the most energetic GRBs on record (GRB 080607) was shrouded in cloud of gas and dust dimming the blast by a factor of 20 – 200, depending on the wavelength.  Despite this strong veil, the GRB was still bright enough to be detected by small optical telescopes for over an hour. So what can this hidden monster tell astronomers about ancient galaxies and GRBs in general?(...)
Read the rest of Ultraluminous Gamma Ray Burst 080607 – A "Monster in the Dark" (458 words)


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The asteroid Eros, as seen by the NEAR mission. Credit: NASA

From the Spitzer website:

New research from NASA's Spitzer Space Telescope reveals that asteroids somewhat near Earth, termed near-Earth objects, are a mixed bunch, with a surprisingly wide array of compositions. Like a piñata filled with everything from chocolates to fruity candies, these asteroids come in assorted colors and compositions. Some are dark and dull; others are shiny and bright. The Spitzer observations of 100 known near-Earth asteroids demonstrate that the objects' diversity is greater than previously thought.

(...)
Read the rest of Near Earth Asteroids Vary Widely in Composition, Origin (572 words)


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The newly refurbished Hubble Space Telescope has taken a new look at Supernova 1987A and its famous "String of Pearls," a glowing ring 6 trillion miles in diameter encircling the supernova remnant. The sharper and clearer image is allowing astronomers to see the “innards” of the star being ejected into space following the explosion, and comparing it with images taken in 2004 provides a unique glimpse of a young supernova remnant as it evolves through time. They found significant brightening of the object over time, and also evident is how the shock wave from the star’s explosion has expanded and rebounded.
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Read the rest of Supernova Spews Its Guts Across Space (605 words)


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Atlantis tribute poster. Credit: NASA

NASA has put out a collection of tribute posters to the Space Shuttle fleet that celebrates the contributions to human space flight of Columbia, Atlantis, Discovery, Challenger and Endeavour. Large versions of these posters now hang in Firing Room 4 of the Launch Control Center at NASA's Kennedy Space Center in Florida. Click on each image for a larger version that you can download.

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Read the rest of Downloadable Shuttle Tribute Posters (32 words)


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Congratulations to one of our favorite astronauts, Chris Hadfield from Canada. Today NASA and the Canadian Space Agency announced Hadfield will be heading to the International Space Station in 2012, serving as Flight Engineer for Expedition 34, and then transitioning to Commander midway through his 6-month stay when Expedition 35 begins. Hadfield will be the first Canadian to serve as Commander for the ISS. His ebullient style and passion for space exploration — evident in the video above from today's announcement (Hadfield speaks in both French and English, so don't worry if you're not fluent in one or the other) should make for a lively and enlightening time on the ISS.

(...)
Read the rest of Oh Canada! Hadfield Named First Canandian Commander of ISS (298 words)


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Congratulations to one of our favorite astronauts, Chris Hadfield from Canada. Today NASA and the Canadian Space Agency announced Hadfield will be heading to the International Space Station in 2012, serving as Flight Engineer for Expedition 34, and then transitioning to Commander midway through his 6-month stay when Expedition 35 begins. Hadfield will be the first Canadian to serve as Commander for the ISS. His ebullient style and passion for space exploration — evident in the video above from today's announcement (Hadfield speaks in both French and English, so don't worry if you're not fluent in one or the other) should make for a lively and enlightening time on the ISS.

(...)
Read the rest of Oh Canada! Hadfield Named First Canadian Commander of ISS (312 words)


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