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. 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 ² British  

/ ˈkɛplə /

noun

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

---

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

See Examples For:

Kepler

Rocket Lab said it now has a deal to operate a mission for Kepler Communications, using its Neutron rocket, which is on schedule to be rolled out to the launch pad next quarter.

From MarketWatch ● Aug. 10, 2026

This aligns with earlier findings from NASA's Kepler mission -- a space telescope that previously measured planet occurrence rates, but the new analysis reduces uncertainties by up to a factor of ten.

From Science Daily ● May 3, 2026

Kpler, a stylized evocation of 17th-century German astronomer Johannes Kepler, was founded in 2014 by François Cazor and Jean Maynier, who had both previously worked in banking and trading.

From The Wall Street Journal ● May 3, 2026

"The war is going to be a big talking point," said Jon Cox, an industry analyst with Kepler Cheuvreux financial services.

From Barron's ● Apr. 14, 2026

To most people, this was an event of dramatic astrological importance, and Kepler had to interpret its significance as part of his duties as Imperial Mathematician.

From "The Scientists" by John Gribbin