Where does this come from, and can I check it?

These near-polar paths precess to match the Sun's apparent yearly motion. The figure is taken from NASA Science, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a space fact?

Yes. It sits on the Space shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Sun-synchronous orbits keep the same local time

These near-polar paths precess to match the Sun's apparent yearly motion A Sun-synchronous satellite passes over each latitude at nearly the same local solar time every day. Earth's slight equatorial bulge twists the orbital plane by about one degree a day, matching the Sun's movement through the sky. Imaging satellites use the trick so shadows and lighting stay consistent between visits. It sits in Mondo's space collection, one of 200 facts that each trace back to the reference below.

Where this comes from

NASA Science

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Space & Astronomy trivia

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Tags: orbits, satellites, imaging

Sun-synchronous orbits keep the same local time: the short answers

Where does this come from, and can I check it?: These near-polar paths precess to match the Sun's apparent yearly motion. The figure is taken from NASA Science, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a space fact?: Yes. It sits on the Space shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.