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.

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

From Barron's • 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

"The Moon has got the same elements in it that we have here on Earth," says Prof Sara Russell, a planetary scientist at the Natural History Museum.

From BBC • Mar. 29, 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

Copernicus held that not just the solar system but the entire universe was heliocentric, and Kepler denied that the stars have planetary systems.

From "Cosmos" by Carl Sagan