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Changing seasons and the sun


Andrew Yee, astronomer
September 16, 2012 — Astronomer Andrew Yee explains the astronomical meaning of changing seasons.


Throughout the year, the sun takes a higher position in the northern and southern hemispheres
Throughout the year, the sun takes a higher position in the northern and southern hemispheres

We have different hours of daylight throughout the year.

This happens because the earth's spin axis is tipped at an angle, and it maintains that orientation as it goes around the sun.

Throughout the year, the sun takes a higher position in the northern and southern hemispheres, and that's what gives us seasons.

It takes the sun more time to cross the sky in the summer, which is why we see more daylight that time of year.

There's a fun activity people can do at home to note the changing sunset positions.

Try taking a photograph of the same location at the same time during the summer, autumn and winter solstice. You'll see a significant change in the sun's orientation.

But remember to be careful. The sun may be low in the sky, but it can still damage your eyes.

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