UNIT 1 - PLANETS AND OTHER BODIES
Hello astronauts!
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| Planet Kepler 10-b, discovered by NASA's Kepler mission |
What is a PLANET? They are bodies that:
- are spherical or almost spherical
- turn around a star
- can atract other bodies
Other bodies:
- DWARF PLANETS: They are spherical but they are smaller and they do not attract other bodies.
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| Dwarf planets, and their sizes compared with planet Earth |
- SATELLITES: They are bodies that turn around planets. For example: moon, titan...
In the following picture you can find different "moons" in the solar system, look how big are Jupiter's satellites:
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| Different satellites in the Solar System |
- COMETS: They are icy small bodies that travel showing a tail.
In the following video, you can find information about Halley's Comet, the most famous periodic comet:
- ASTEROIDS: They are rocky bodies with a variable size; from few metres to several kilometres.
When asteroids enter into atmosphere, they are called METEORITES.
Look this amazing video about a meteor in Russia, which was seen on February, 15th 2013 in Russia. 1500 people injured by the expansive wave.
Are you afraid of meteorites? :O
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