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Somebody moved UK's oldest satellite, and no-one knows who or why (www.bbc.com)

submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]

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Summary

The UK’s oldest satellite, Skynet-1A, launched in 1969, has mysteriously shifted from its original orbit over Africa to a high-risk position over the Americas.

It’s suspected that in the 1970s, Skynet-1A was intentionally moved west, possibly by U.S. controllers, but records confirming who made this decision and why are missing.

Now inactive, the satellite poses collision risks to active satellites, as it occupies a congested orbit at 105 degrees West longitude.

The UK may eventually need to consider relocating Skynet-1A or removing it altogether to mitigate risks from space debris.

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[–] [email protected] 45 points 1 week ago (1 children)

We need to avoid what I call super-spreader events.

Or what everyone else calls the Kessler syndrome.

[–] [email protected] 7 points 6 days ago

It's not Kessler Syndrome until it's so bad that we can't feasibly launch anything new. A single cascading collision chain might calm down again after breaking a lot of stuff without any catastrophic long term impact if all the debris ends up either in a stable orbit that can be predicted and avoided by other objects, or unstable orbits that decay until the debris falls out of orbit.