1. An oval having both ends like gravity - Ellipse, 2. The natural force that makes objects move or tend to move toward each other aphelion - Gravity, 3. The path of the earth or any planet around the sun ellipse - Orbit, 4. To move around a center or axis rotate - Rotate.
5. Instrument for making distant objects appear nearer, larger, and brighter perihelion - Telescope,
6. The point in a planet's orbit that is farthest from the sun revolution - Aphelion
7. The point in a planet's orbit that is nearest the sun orbit - Perihelion
8. Movement around some point in a circle or curve telescope - Revolution
9. A formal written work dealing with some subject treatise - Treatise
Gravity is a fundamental interaction that causes shared feeling 'tween the entirety accompanying bulk or strength. A planet is a heavenly body that (a) is in influence by the Sun, (b) has adequate bulk for allure self-seriousness to overcome severe physique forces for fear that it acquires a hydrostatic balance (almost round) shape, and (c) has emptied the neighborhood about allure domain.
The planets, orderly of their distance outward from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
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