Suppose you observe the same constellation from above at the same time in the ev

Science
Tutor: None Selected Time limit: 1 Day

Describe its change in position or orientation throughout the year. You can do this by advancing the date on the night sky web site in 3 month intervals and observe the changes in your chosen constellation.

Mar 5th, 2015

I'm not sure what "from above" refers to here, it doesn't make much sense to me in this context. And the wording suggests you should refer to a specific constellation. But generally, they will appear to rotate to the West. Remember they'll seem to rotate around one of the poles (north or south) so constellations closer to the poles will trace smaller cirles around them, while those near the equator will trace a route right around the sky (from the POV of an observer on Earth).

To understand why, think about the Earth orbiting the sun. Remember at night, you'll always be facing *away* from the sun (since it's night!) so the part of the sky you're facing will sweep round 360 degrees over the course of a year.

Mar 5th, 2015

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