GRB 080319B was a
gamma-ray burst (GRB) detected by the
Swift satellite at 06:12
UTC on March 19, 2008. The burst set a new record for the farthest object that was observable with the
naked eye: it had a peak visual
apparent magnitude of 5.8 and remained visible to human eyes for approximately 30 seconds. The magnitude was brighter than 9.0 for approximately 60 seconds.