Astronomy
Learn about the vast expanse of space with these pages.
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The Sun is the center of our Solar System. It is a huge, spinning ball of hot gas and nuclear reactions that lights up the...
Jupiter is the fifth and largest planet in our solar system. This gas giant has 39 known moons and a dark, barely-visible ring.
The planets that orbit the sun are (in order from the sun): Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune...
Mars, the red planet, is the fourth planet from the sun in our solar system. Mars has two small moons, Phobos and Deimos.
Neptune is the eighth planet from the sun in our solar system.
Comets. A comet is a small, icy celestial body that orbits around the sun. It is made up of a nucleus (solid, frozen ice...
Learn about the life cycle of a star with this helpful diagram.
AllAboutSpace.com is a comprehensive on-line hypertext book about astronomy. It is designed for people of all ages and...
Pluto is a dwarf planet that usually orbits past the orbit of Neptune. It was classified as a dwarf planet in 2006; before...
Introduction to Research on the Internet
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