Roscosmos says that radiation in low Earth orbit fried Phobos-Grunt’s computer, an explanation that not everyone is buying:
“The most likely reason, in the opinion of the commission, was the local impact of heavily charged space particles that led to a failure in the memory of the main onboard computer in the second stage of flight,” [Roscosmos Head Vladimir] Popovkin told Russian news agencies in Voronezh, a town 450 km (280 miles) south of Moscow.
A burst of space radiation caused the onboard computers to reboot and go into standby mode, he said.





