Washington, September 20 : NASA''s Swift satellite has found the most distant gamma-ray burst ever detected, designated GRB 080913, which arose from an exploding star 12.8 billion light-years away.
"This is the most amazing burst Swift has seen," said the mission''s lead scientist Neil Gehrels at NASA''s Goddard Space Flight Center in Greenbelt, Maryland. "It''s coming to us from near the edge of the visible universe," he added.
Because light moves at finite speed, looking farther into the universe means looking back in time.
GRB 080913''s "lookback time" reveals that the burst occurred less than 825 million years after the universe began.