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Edexcel IGCSE Physics Unit 8 – Astrophysics Complete Guide CA$13.85   Add to cart

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Edexcel IGCSE Physics Unit 8 – Astrophysics Complete Guide

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Edexcel IGCSE Physics Unit 8 – Astrophysics Complete Guide 1. Universe - Defined as an immense collection of billions of galaxies. 2. Galaxy - Refers to a large grouping of stars, often along with gas and dust, held together by gravitational forces. 3. Milky Way - Specifically, it's the g...

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  • July 9, 2024
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Edexcel IGCSE Physics Unit 8 – Astrophysics Complete Guide
1. Universe



- Defined as an immense collection of billions of galaxies.




2. Galaxy



- Refers to a large grouping of stars, often along with gas and dust, held together by gravitational


forces.




3. Milky Way



- Specifically, it's the galaxy that contains our solar system, including Earth and the Sun.




4. Solar System



- Describes the entirety of celestial bodies orbiting around the Sun, encompassing planets, dwarf


planets, asteroids, and comets.

, 5. Planet



- A significant celestial body that orbits a star, typically in an almost circular orbit with a slight elliptical


shape.




6. Planets in our Solar System (from closest to the Sun)



- Listed as Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.




7. Dwarf Planet



- Designates an object similar to a planet but smaller in size and not meeting all criteria to be classified


as a full planet.




8. Moon



- A natural satellite that orbits a planet in a nearly circular path.

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