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BONUS: $90 BANK OF AMERICA Gift Card Opportunity







parated from the S-IVB by explosives. After Apollo 15 separated from the booster, the S-IVB maneuvered away, and, as planned, impacted the Moon about an hour after the crewed spacecraft entered lunar orbit, though due to an error the impact was 79 nautical miles (146 km) away from the intended target.[ALFJ 6] The booster's impact was detected by the seismometers left on the Moon by Apollo 12 and Apollo 14, providing useful scientific data. There was a malfunctioning light on the craft's service propulsion system (SPS); after considerable troubleshooting, the astronauts did a test burn of the system that also served as a midcourse correction. This occurred about 028:40:00 into the mission. Fearing that the light meant the SPS might unexpectedly fire, the astronauts avoided using the control bank with the faulty light, bringing it online only for major burns, and controlling it manually. After the mission returned, the malfunction prov ed to be caused by a tiny bit of wire trapped within the switch.[ALFJ 7][ALFJ 8] Picture of Earth taken from space Image of Earth taken during the translunar coast After purging and renewing the LM's atmosphere to eliminate any contamination, the astronauts entered the LM about 34 hours into the mission, needing to check the condition of its equipment and move in items that would be required on the Moon. Much of this work was televised back to Earth, the camera operated by Worden. The crew discovered a broken outer cover on the Range/Range Rate tapemeter. This was a concern not only because an important piece of equipment, providing information on distance and rate of approach, might not work properly, but because bits of the glass cover were floating around Falcon's interior. The tapemeter was supposed to be in a helium atmosphere,[ALFJ 9] but due to the breakage, it was in the LM's oxygen atmosphere. Testing on the ground verified the tapemeter would still work prop