The Penguin Dictionary of Astronomy

Containing 2400 entries, this dictionary encompasses all aspects of classical and modern astronomy and gives the names of constellations, stars, galaxies, asteroids, comets, nebulae and observatories. Exact definitions of terms used in astrophysics and cosmology allow access to the most up-to-date research. A wide range of phenomena, from blazars and black holes to runaway stars and the Hawking effect, are carefully explained.