Sea Launch’s delayed Zenit-3SL, carrying the NSS-8 communications satellite for SES New Skies, has exploded on the launch pad, destroying both the vehicle and satellite. However, the Odyssey Launch Platform appears to have avoided critical damage.
The explosion occurred just as the vehicle was about to lift off the pad. The rocket could be seen falling into the launch pad before a fireball engulfed the launch platform. Hi res, extended videos of the failure is available on the link below (read more).