A Russian rocket carrying three navigation satellites worth
around $200 million crashed after its engines suddenly switched off, shortly
after lift-off from the Russian-leased Baikonur launch facility in Kazakhstan
on Tuesday
The accident led to a large spill of heptyl, a highly toxic
rocket propellant, but there were no reports of casualties or of any immediate
threat to nearby settlements.
The rocket fell apart in flames in the air and crashed in a
ball of fire near the launch pad.
State-run Rossiya-24 television showed footage (see footage
after jump) of the Proton-M booster rocket veering off course seconds after
lift-off.
Russia's space agency Roscosmos said the accident had been
caused by the emergency switch-off of the rocket's engines 17 seconds into the
flight.
Russia's state-run RIA news agency said the switch-off could
have been caused by a problem with the engine or the guidance system.
The rocket contained 172 metric tons (1 metric ton = 1.1023
tons) of highly toxic heptyl propellant, Kazakh Emergencies Minister Vladimir
Bozhko told an emergency government meeting.
Talgat Musabayev, head of Kazakhstan's space agency
Kazcosmos, said nitric oxide - a product of burning heptyl - was much less
toxic for humans. He said it was raining in the area, so toxic clouds would
probably not reach the town of Baikonur some 60 km (38 miles) away.
However, the authorities instructed locals to stay at home
and not to open windows, and ordered to close shops and public catering, said
Kazakh Interior Minister Kalmukhambet Kasymov.
The estimated loss from the three satellites, meant for
Russia's troubled Glonass satellite navigation system, was about $200 million,
Rossiya-24 reported.
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