This supernovae may thus be a GRB, with its jets pointed away from Earth when it exploded.
The Boeing 747 was just over half an hour into its flight from London to New York when it exploded, seconds before 19 03 UK time, on 21 December 1988.
Between 1949, when the Soviet Union tested its first crude fission bomb, and 1953, when it exploded a hydrogen bomb (perhaps with help from Pontecorvo) the leadership shifted from Stalin to Khrushchev.
That was when it exploded.
"We were trying to get close when it exploded.
Some witnesses said police officers were trying to defuse the device when it exploded.
The two technicians were working at the fourth reactor when it exploded.
It had barely gotten over water when it exploded, sending the crew members to their deaths.
The steam engine was being moved into place for an outdoor exhibit when it exploded.
Rob Doherty, 33, a Mirant worker, was near the unit when it exploded.
The officials said the boat then returned, evidently to retrieve another line, when it exploded.
