Space Exploration

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astronomical unit
(AU) is the Earth's average distance from the Sun, nearly 150 million km
planet
orbits the Sun, is large enough to be nearly spherical in shape, and has no other large object in its orbital path
Dwarf planets
orbit the Sun and are nearly spherical in shape, but they share their orbital paths with other objects that are similar in size
Satellite
is an object that orbits a larger object other than a star. Natural satellites are called moons
meteoroid
is a solar system object that is smaller than an asteroid or a comet
meteor
streak of light created when meteoroid enters Earth's atmosphere
meteorite
a meteoroid that strikes Earth
Composition
What something is made up of
Habitable
Good to live in
Sustainability
The ability to maintain or to keep up with
Characteristics
the describing trait of a person, place or thing
Galaxy
A huge grouping of stars.
Light-Year
The distance light can travel in one year
Star
A huge, hot, glowing ball of gas.
Constellation
one of 88 groups of stars visible from Earth
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