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Originally posted by completenuttergit
I saw a weird one a few months ago but kept quiet about it, Being in the south of England i was outside having a smoke about 1am, looking north i noticed two lights which i thought were satelites. Both traveling on the same course and same speed going from west to east. Then, one stopped and the one behind did exactly the same .
The leading one the moved off again and then the following one did the same then, again, the leading one stopped and the following one slowed and stopped... then both moved off on a different course due north and promptly disappeared ..
Originally posted by GezinhoKiko
fantastic thread mate. Me and my girlfriend live in the west midlands and on most nights (when clear) i love to be looking at the sky, and on a few occasions have seen satelites, but on one we saw 3 together just cruising across the sky, they didnt stop but they were within an inch of each other (from my prospective). Now im saying they were satelites but would they have been that close???
The GRACE mission consists of two satellites flying one behind another in near circular orbits at an altitude of 460 km and about 220 km apart. The satellites have really neat nicknames: Tom and Jerry. The leading satellite (that would be Jerry) sends a microwave signal to the trailing satellite (Tom) to precisely measure the distance between the two. GRACE can detect very small changes in the distance that separates the two spacecraft, down to one-tenth of the width of a human hair. The Global Positioning System (GPS) onboard Tom and Jerry is used to determine the precise location of the measurement taken