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planets (noun)
Large celestial bodies that orbit a star, are spherical in shape due to their own gravity, and have cleared their orbital neighborhood of other debris.
"Astronomers use powerful telescopes to discover new planets."
P-L-A-N-E-T-S: People Love Always Noticing Every Tiny Star (even though planets aren't stars!).
The Sun is a planet. → The Sun is a star.
There are nine planets. → There are eight planets.
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