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Planetary Systems - Our Solar System
Astronomy GCSE
5
Science
11th Grade
03/01/2017

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Cards

Term
What is Retrograde?
Definition
An optical illusion created when the Earth passes slower moving planets further out in orbit. It gives the apparent backwards motion of the planet against the star background.
Term

When will the next Retrograde be?

 

 

 

 

(Flashcard written in 2017)

Definition
28th June 2018
Term
What is the Ecliptic?
Definition
The plane the planets follow around the sun.
Term
What does the Ecliptic pass through?
Definition
13 constellations known as the zodiac.
Term
What is the Astronomical Unit?
Definition

The mean average distance from the Earth to the sun (150000000Km).

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