Something’s tugging at our Pioneers

The Pioneer 10 and 11 space probes are in the grip of an unknown force that seems to be holding them back as they head into interstellar space.

Dark matter? A flaw in general relativity? Or simply a propellant leak?

Nobody knows… (cue spooky music)

Permanent link to this article: https://edwardwillett.com/2004/09/somethings-tugging-at-our-pioneers/

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