An ambitious but failed attempt by Russia to return to the moon after nearly half a century has exposed the massive challenges faced by Moscow's once-proud space program. The destruction of the robotic Luna-25 probe, which crashed onto the surface of the moon over the weekend, reflects the endemic problems that have dogged the Russian space industry since the 1991 collapse of the Soviet Union. Yuri Borisov, the head of the state-controlled space corporation Roscosmos, attributed the failure to the lack of expertise due to the long break in lunar research that followed the last Soviet mission to the moon in 1976.