Today's Rocket Words: Your 5 words and meanings to learn

diameter

The straight line from one side of an object to the other.

tide

The alternate rising and falling of the sea due to the attraction of the Moon.

eclipse

When one celestial body stops light from reaching another celestial body.

gravitational pull

Something all objects create which attracts other bodies towards them.

mean orbit velocity

The speed which a body travels around another body.

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