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planets

NOUN

celestial body orbiting a star

Synonyms

STRONGEST

asteroid earth globe sphere world

STRONG

apple marble orb planetoid

WEAK

heavenly body luminous body terrene wandering star

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Under standard theories, planets form within giant discs of gas and dust called protoplanetary discs.

From Science Daily • May 21, 2026

"That makes this an inside-out system, with a planet order of rocky-gaseous-gaseous-and then rocky again. Rocky planets don't usually form so far away from their home star," says Thomas.

From Science Daily • May 21, 2026

But in this system, researchers believe the star may have produced its planets sequentially rather than all at once.

From Science Daily • May 21, 2026

"Much about how planets form and evolve is still a mystery. Finding clues like this one for solving this puzzle is precisely what Cheops set out to do."

From Science Daily • May 21, 2026

Instead of moving in circles, the planets, including Earth, moved in el- lip ses around the sun.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife