Astronomy, Space & Time

The emergence, existence and development of the surrounding world, both on Earth and throughout the universe, are due to the gravitational interact...

Heavenly Mathematics traces the rich history of spherical trigonometry, revealing how the cultures of classical Greece, medieval Islam, and the mod...

The continuous stream of particles flowing outward from the Sun is called the solar wind. It mostly consists of electrons and protons with energies...

The Biographical Encyclopedia of Astronomers is a unique and valuable resource for historians and astronomers alike. It includes approx. 1850 biogr...

Nothing seems more real than time passing. We experience life as a succession of moments. But just as some of us see God as eternal, so physicists ...