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Mangalyaan crosses distance of Moon’s orbit

‘MOM is now the farthest object sent into space by India,’ Indian Space Research Organisation (Isro) announced on Monday. A coded ranging pulse is sent to the spacecraft to measure MOM’s distance from the ground. When the spacecraft receives this pulse, it returns the pulse on its downlink.

‘The distance to the spacecraft and ground station can be computed from the delay between sending and receiving this pulse,’ scientists explained. The Mars Orbiter spacecraft was successfully placed in the Mars Transfer Trajectory early on Sunday morning.

During this critical manoeuvre, which began after midnight on Sunday, the spacecraft’s 440 Newton liquid engine was fired for about 22 minutes providing a velocity increment of 648 meters per second to the spacecraft.
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