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universe

TermDefinition
universe all existing matter and space considered as a whole; the cosmos.
solar system the collection of planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
galaxy a system of millions or billions of stars, together with gas and dust, that orbit a central point .
planet a celestial body moving in an elliptical orbit around a star
The Big Bang Theory how all the mass in the universe is expanding from a single point, and still is expanding
Star massive body of gas that illuminates from internal energy sources
Moon celestial bodies that revolves around a planet A moon can be larger than other planets
Asteroid large celestial bodies that is not massive enough to have a round shape and orbit the sun.
Comets icy small celestial bodies that releases gases when coming close to the sun
Meteoroid small rocks or particles that orbit the sun
Keplars First Law All planets move in an elliptical orbit
Keplar's 2nd Law Planets move fastest when they are at the closest point to the sun
Keplar's 3rd Law The closer a planet is to the sun the faster the planet travels
perihelion The closest point a moon or planet is to the celestial body it orbits
aphelion The farthest point a moon or planet is to the celestial body it orbits
equinox When Earth has the same hours of daylight and night time. The beginning Fall or Spring
Solstice The longest or shortest hours of daylight. The beggining of Summer or Winter
Lunar Eclipse When the moon is in Earth's shadow. The Earth is between the sun and the moon
Solar Eclipse The moon cast a shadow on Earth. The moon is between the sun and the Earth
Created by: 4801773544
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