Kepler

American  

[kep-ler] / ˈkɛp lər /

noun

1. Johannes 1571–1630, German astronomer.

2. a crater in the second quadrant of the face of the moon having an extensive ray system: about 22 miles (35 km) in diameter.

---

Kepler ¹ British  

/ ˈkɛplə /

noun

1. a small crater in the NW quadrant of the moon, centre of a large bright ray system

---

Kepler ² British  

/ ˈkɛplə /

noun

1. Johannes (joˈhanəs). 1571–1630, German astronomer. As discoverer of Kepler's laws of planetary motion he is regarded as one of the founders of modern astronomy

---

Kepler Scientific  

/ kĕp′lər /

1. German astronomer and mathematician who is considered the founder of celestial mechanics. He was first to accurately describe the elliptical orbits of Earth and the planets around the Sun and demonstrated that planets move fastest when they are closest to the Sun. He also established that a planet's distance from the Sun can be calculated if its period of revolution is known.

---

Other Word Forms

• Keplerian adjective

Example Sentences

The discovery comes from continued analysis of data collected by NASA's Kepler Space Telescope, which ended its mission in 2018.

From Science Daily • Feb. 12, 2026

Kepler Cheuvreux resumes coverage of Orsted with a buy rating and 140 kroner target price on the stock.

From The Wall Street Journal • Oct. 20, 2025

Nick Castellanos roped a line drive just inside the third-base line in the next at-bat, doubling home Kepler to open the scoring.

From Los Angeles Times • Oct. 9, 2025

Having the backing of Kepler allowed the studio to attract actors including Daredevil's Charlie Cox, Lord of the Rings star Andy Serkis, and video game actors Jennifer English and Ben Starr.

From BBC • May 3, 2025

Despite the church’s objections, Kepler’s heliocentric system would prevail eventually, because Kepler was right and Aristotle was wrong.

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