Practical Guide to the Universe: Galaxies - Home of the Stars (1997)

Genres - Science & Technology  |   Sub-Genres - Physical Sciences  |  
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To the naked eye, stars and planets can be detected in the night sky; but with the aid of powerful telescopes, astronomers can study the wide variety of galaxies throughout the universe. The spiral shape of our home galaxy, the Milky Way, is seen frequently; but there are elliptical galaxies as well as spherical, barred spiral, peculiar, and irregular. Some odd shapes seem to occur as a result of one galaxy colliding with another. Practical Guide to the Universe: Galaxies - Home of the Stars explains the activity within galaxies, and investigates pulsars and black holes.