spacetoday.net: space news from around the webin association with SpaceNews


Dark GRBs linked to dust clouds
Posted: Tue, Jun 9, 2009, 8:22 AM ET (1222 GMT)
Dark GRB illustration (NASA/Swift/Aurore Simonnet) A class of gamma-ray bursts (GRBs) without a visible afterglow have been linked to galaxies with previously undetected dust clouds, astronomers announced Monday. "Dark" GRBs are so named because they have no detectable afterglow as visible or infrared wavelengths. Astronomers originally thought these GRBs were so distant that the light had been redshifted beyond detection. However, astronomers studied 14 such bursts and found that almost every one of them was associated with a galaxy that was visible in optical telescopes. Astronomers now believe the optical afterglow of these GRBs was absorbed by clouds of dust, perhaps associated with regions of star formation, not previously detected around these galaxies.
<<previous article   next article>>
news in brief
Senate hearing raises doubts of Artemis
Posted: Sat, Sep 6 8:50 AM ET (1250 GMT)

NASA names new associate administrator
Posted: Sat, Sep 6 8:46 AM ET (1246 GMT)

President Trump moves Space Command HQ to Alabama
Posted: Sat, Sep 6 8:44 AM ET (1244 GMT)

news links
Saturday, September 13
SpaceX, Northrop Grumman to launch supplies to ISS
Spectrum News — 5:52 am ET (0952 GMT)
Cornell-led space tech startup acquired by Pasteur Labs
Cornell Univ. — 5:51 am ET (0951 GMT)
How China Is Transforming Space Power
The Diplomat — 5:46 am ET (0946 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list