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      a time of year, caused by Earth’s tilt. A year on Earth is usually divided into
      four quarters, or seasons: spring, summer, autumn or fall, and winter.


NASA studies the seasons on Earth and on other planets.

Summer is my favorite season of the year.

Related Links:
NASA Now Minute: Reasons for the Seasons
What Causes the Seasons?  


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The words spring, summer, autumn and winter are superimposed on a colorful background
Spring, summer, autumn and winter are the names of the four seasons on Earth.
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Page Last Updated: October 9th, 2014
Page Editor: Sandra May