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Solar System

Astronomy The study of space and celestial objects such as stars, planets, and moons.
Astronomer Someone who studies astronomy.
Rotation The action of turning around an axis or center
Revolution When a celestial body orbits once fully around a sun creating one year.
Orbit The path a celestial body or satellite takes around another celestial body or satellite.
Constillation A group of stars that that form a recognizable shape or image.
Geocentric theory The idea that the Earth is the center of the universe, instead of the sun, and that all the planets and celestial bodies orbit it.
Heliocentric theory The Earth, planets, and other objects orbit the sun, instead of the Earth.
Comet A frozen ball of dust that when near the sun, has a tail pointed away from the sun.
Gravity An invisible force that attracts objects toward the origin of it.
Solar system A collection of celestial bodies and other objects orbiting a star.
NASA The National Aeronautics and Space Administration.
Meteor A small body of space matter that when entering a planets atmosphere, it becomes incandescent.
Telescope A device that makes far away objects seem closer and clearer.
Solstice When the sun reaches the highest or lowest point in the sky at solar noon, marked by the shortest and longest days.
Equinox When the sun's light points directly at the equator and their is equal day and night.
Axis An imaginary line drawn through a planet that they rotate on.
Equator An imaginary line drawn around the center Earth dividing the Southern and Northern Hemispheres.
Waxing To Grow
Waning To Shrink
Moon Phases Stages the moon goes through during its orbit. New Moon, Waxing Crescent, 1st Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, 3rd Quarter, Waning Crescent...
Moon's orbital tilt 5 degrees
Sun A star in which planets orbit.
Satellite An object that orbits something.
Orbit The path a celestial object takes around another.
Solar Eclipse When the moon moves in front of Earth and blocks out the suns light
Lunar eclipse When the Earth crosses in front of the moon and blocks out its light.
Maria A flat surface eon the moon that looks like water. Latin for "seas"
Tides The alternate rising and falling of ocean levels. High tide when the tides are taller, and Low tide when the tides are shorter.
Spring tide When the SEM are aligned, and the high tide is unusually strong.
Neap tide When the sun and moon are at a right angle, there is the lowest difference between tides.
Umbra The most shaded part of the moon's or earth's shadow during an eclipse.
Penumbra The partially shaded part of the moon's or earth's shadow during an eclipse.
Created by: 1963181268