History of the Universe

History of the Universe eBook. 398 pages, 300 illustrations only $2.99

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Planetary Nebula

To early astronomers with low resolution telescopes, these clouds looked like distant planets.

Cats Eye Nebula image courtesy of: X-ray: NASA/CXC/SAO; Optical: NASA/STScI

In fact they are clouds of gas blown away by the death of small to medium red giant stars, such as the Sun will eventually become. The nucleus of the star remains as a white dwarf star.

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History of the Universe eBook
History of the Universe eBook
Only $2.99

Written by Wyken Seagrave
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