On a clear night away from towns there are thousands of stars overhead, and one of them barely moves. Every other star wheels slowly round it through the night, rising and setting, but it hangs in the same spot above the northern horizon from dusk until dawn and from one year to the next. That star is Polaris, the Pole Star, and it lies within about one degree of true…
In this lesson
Before you start: seeing the stars
Polaris from the Plough
What it is
When to use it
How
Common mistakes
Polaris from Cassiopeia
The turning sky: circumpolar stars
Why it matters
How to use it
Polaris's height gives your latitude
Why it works
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The rest of this lesson is in the full course
Every module, practical and exam, self-paced and private, with a certificate at the end.
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Places on the full course open soon. Module 1 is free to try now.
