Euclid's Elements of Geometry. By Charles Smith Sophie Bryant. Pp. vi + 127. (London: Macmillan and Co., Ltd., 1899.) THIS book deals only with Euclid's Books III. and IV.

The Text of Euclid's Geometry. Book I., uniformly and systematically arranged. With a discussion of Euclid's application of logical principles, copious notes, exercises, and a figure-book.

The European Space Agency's Euclid mission will map 1.5 billion galaxies while searching for dark matter and dark energy.

The first five color images captured by the European Space Agency’s Euclid telescope were revealed Tuesday, capturing previously unseen cosmic details.

The Euclid mission, which will measure how the dark universe affects the geometry of the cosmos, is named after the 'father of geometry.' Scientists are about to get a new tool to uncover some of ...

The first five color images captured by the European Space Agency’s Euclid telescope were revealed Tuesday, capturing previously unseen cosmic details.

The slower growth of gravitational wells and the accelerating expansion might share the same underlying cause.” In so many ...

Named after the ancient Greek mathematician who's considered the "father of geometry," Euclid is a space telescope that is 14.7 feet (4.5 meters) tall and 10.2 feet (3.1 m) in diameter.

The European Space Agency’s Euclid space telescope launched Saturday on a six-year trek to investigate the mysteries of the “dark side” of the universe.