cloud?- Why is Pluto no longer considered a planet?
- Name the four known dwarf planets in our solar system.
Further Reading / Supplemental Links
- http://www.nasa.gov/worldbook/asteroid_worldbook.html
- http://www.iau.org/iau0602.423.0.html
- http://en.wikipedia.org/
Vocabulary
asteroid
Rocky objects larger than a few hundred meters that orbit the Sun in the region known as
the asteroid belt.
asteroid belt
Region between the orbits of Mars and Jupiter where many asteroids are found.
comet
Asmall, icy, dusty object in orbit around the Sun.
dwarf planet
Around celestial object orbiting the Sun that has not cleared its orbit of other objects.
Kuiper belt
Aregion of space around the Sun beyond the orbit of Neptune that contains millions of frozen
objects.
meteor
Material from outer space that burns up as it enters Earth’s atmosphere.