Sea Launch Russian Upper Stage Shut Down 54 Sec. Early

A Russian RSC Energia Block DM-SL upper stage shut down 54 sec. early during last month's launch of the Telstar 18 communications satellite atop a Sea Launch Zenit rocket, based on preliminary flight data. The anomaly left the spacecraft some 14,000 km. (8,700 mi.) below the apogee targeted for its...

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