CLJones@MIT-MULTICS.ARPA (05/25/84)
From: Chris Jones <CLJones@MIT-MULTICS.ARPA> These all refer to failures to achieve earth orbit after launch from earth. If you think about it, it's pretty pointless carry the fuel necessary to decelarate the probe from ~ 25000 mph to 18000 mph from the earth to the moon, then back to earth orbit (especially since you'd need still more fuel to kick it out of earth orbit for recovery).