GRB sets new cosmic distance record
Posted: Wed, Apr 29, 2009, 9:23 AM ET (1323 GMT)
A gamma-ray burst last week is the most distant object ever observed, astronomers announced Tuesday. The burst, GRB 090423, was detected by NASA's Swift spacecraft on April 23 and observed in the following hours by several ground-based telescopes, looking for an afterglow in visible or infrared light. Those followup observations determined that the object had a redshift of 8.2, corresponding to a distance of just over 13 billion light-years and making it the most distant object ever observed. The previous record-holder, a GRB observed last September, had a redshift of 6.7, meaning it was 190 million light-years closer than this GRB.
A gamma-ray burst last week is the most distant object ever observed, astronomers announced Tuesday. The burst, GRB 090423, was detected by NASA's Swift spacecraft on April 23 and observed in the following hours by several ground-based telescopes, looking for an afterglow in visible or infrared light. Those followup observations determined that the object had a redshift of 8.2, corresponding to a distance of just over 13 billion light-years and making it the most distant object ever observed. The previous record-holder, a GRB observed last September, had a redshift of 6.7, meaning it was 190 million light-years closer than this GRB.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
Starship explodes during preparations for static-fire test
Posted: Sun, Jun 22 6:52 AM ET (1052 GMT) |
|
news links
|
|
Tuesday, July 1
Move over Starlink, here comes Kuiper
Gulf News — 4:58 am ET (0858 GMT) USSF Seeks Industry Ideas For Space-Based Interceptors
Aviation Week — 4:57 am ET (0857 GMT) Don’t forget about Iran’s space program
POLITICO — 4:54 am ET (0854 GMT) EU Space Act is ‘orbital equivalent of GDPR’, says lawyer
Luxembourg Times — 4:53 am ET (0853 GMT) Poland’s second ever astronaut is safe in space
Euro Weekly News — 4:49 am ET (0849 GMT) |
