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Space - Macen
Grade 9 - Space Review
Term | Definition |
---|---|
Celestial Objects | A term used to describe stars, planets, moons etc. |
Milky Way | The name of the galaxy we live in |
The Big Bang Theory | The theory that explains how the universe began |
Inner Planets | Planets that are made up of rock that are located between the sun and the asteroid belt |
Outer Planets | Planets made up of gas: Jupiter, Saturn, Uranus and Neptune |
Nuclear Fusion | Occurs in the core of the sun where hydrogen atoms fuses to become helium |
Protostar | A new born star |
Umbra | The part of the shadow directly behind the object |
Penumbra | An outer shadow |
Polaris | The north star which never changes positions in the sky |