planetary

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.

This suggests that electrical activity driven by dust, lightning, or energetic particles may play a broader role in shaping planetary environments.

From Science Daily • Apr. 5, 2026

The Moon will appear to the astronauts "about the size of a basketball held at arm's length," Noah Petro, head of NASA's planetary geology lab, told AFP.

From Barron's • Apr. 5, 2026

To Jef Caers, a professor of earth and planetary sciences at Stanford University who happens to be Belgian, the museum’s stance looks like “delay tactics.”

From The Wall Street Journal • Mar. 28, 2026

That means astronomers could use them to better understand how stellar particles influence planetary environments.

From Science Daily • Mar. 27, 2026

To account for the planets’ bizarre behavior, Ptolemy added epicycles to his planetary clockwork: little circles within circles could explain the backward, or retrograde, motion of the planets.

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