Aristarchus

American  

[ar-uh-stahr-kuhs] / ˌær əˈstɑr kəs /

noun

1. of Samos. late 3rd century b.c., Greek astronomer.

2. of Samothrace. c216–144 b.c., Greek philologist and critic.

3. an extremely bright crater in the second quadrant of the face of the moon: about 29 miles (47 km) in diameter from crest to crest.

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Aristarchus British  

/ ˌærɪˈstɑːkəs /

noun

1. a crater in the NE quadrant of the moon, having a diameter of about 37 kilometres, which is the brightest formation on the moon

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Example Sentences

Because seifertite and stishovite are easily disturbed by thermal metamorphism, they inferred the silica fragment likely originated from the collision that formed the Aristarchus crater.

From Science Daily • Feb. 6, 2024

At the 2-kilometer-tall Aristarchus plateau, scientists want to study abundant volcanic ash deposits, which were created in explosive, gas-driven eruptions, a rarity on the moon.

From Science Magazine • Nov. 19, 2018

Among them was a letter from US Founding Father John Jay to George Washington, dated 1781, and another letter sent to King George III by a spy named Aristarchus.

From BBC • Apr. 1, 2015

Aristarchus Plateau is the primary location for these transient events, says Crotts, followed by the craters of Plato, Grimaldi, Kepler, Copernicus and Tycho.

From Forbes • Apr. 1, 2013

Aristarchus proposed a universe with the sun at its center and the stars set in a sphere that was unimaginably distant.

From "Circumference" by Nicholas Nicastro