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Off Topic » in reply to Earth’s Impending Magnetic Flip . . . (originally from Mysteries of the Multiverse)

A sextant can only provide you with a position.

ER — 9/29/2014 4:11:52 PM (archived)

You need a compass to steer a course.

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The whole thread (4 posts)

Earth’s Impending Magnetic Flip . . . (originally from Mysteries of the Multiverse) - DanS - 9/29/2014 2:43:54 PM
- A sextant can only provide you with a position. - ER - 9/29/2014 4:11:52 PM
  - we-e-ell . . . - DanS - 9/29/2014 4:50:17 PM
    - Knowing where you're at is not enough. - ER - 9/29/2014 5:18:51 PM

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HabitableZone — be civil, or at least entertaining. Masthead: Earth photographed from the International Space Station (NASA); the spire in the Eagle Nebula (NASA, ESA and The Hubble Heritage Team, STScI/AURA).