astrophysics

Examines and explains Einstein's theories of relativity as they pertain to high-speed motion and gravity.

Examines and explains Einstein's theories of relativity as they pertain to high-speed motion and gravity.

Explains how the solar system was created, where comets come from, how rings form around planets, why Pluto isn't a planet, and other related topics.

Presents a series of experiments and activities that young astronomers can use to explore the Moon and planets, gravity, galaxies, and more.

Entertaining essays and cartoons explain the sizes of materials in the universe and modern physics.

Examines space phenomena such as stellar signals, conundrums, and spacetime.

Presents the notes and a sound recording of the lecture given at Caltech in 1964 by renowned physicist Richard Feynman in which he developed a proof of the law of ellipses, accounting for the orbit of the planets, using elementary plane geometry.

Examines the mysteries of time, the consequences of Einstein's relativity theory, and reports on the latest research theories.

Explains the complex physical processes at work at the beginning of the universe and explores topics on the frontiers of cosmology such as extra dimensions and cosmic wormholes.

Contains a collection of articles that discuss trends in the study of changes within physical systems, energy conservation and momentum, covering interstellar travel, subatomic levels, planets, moons, asteroids, as well as black holes and nuetron stars.