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Stack #4654188

QuestionAnswer
solar system a star and all the celestial objects—planets, moons, asteroids, comets, and dust—that are bound to it by gravity and orbit around it.
planet a large, round celestial body that orbits a star (like our Sun) and does not produce its own light.
star a massive, luminous, and roughly spherical body of plasma (electrically charged gas) held together by its own gravity.
galaxy a massive, gravitationally bound system consisting of stars, stellar remnants, interstellar gas, dust, and dark matter.
light-year the distance light travels in a vacuum in one Julian year (365.25 days).
universe the totality of all space, time, matter, and energy that exists.
solstice an astronomical event occurring twice annually (June and December) when the Sun reaches its highest or lowest point in the sky at noon, directly overhead the Tropics of Cancer or Capricorn.
star a massive, luminous, and roughly spherical body of plasma held together by its own gravity
apparent magnitude a measure of how bright a star, planet, or other celestial object looks to an observer on Earth.
luminosity the total amount of light or energy an object (like a star or light bulb) produces every second.
absolute magnitude of an astronomical object's intrinsic brightness (luminosity), defined as the apparent magnitude a star or object would have if placed at a standard distance of 10 parsecs ( light-years) from Earth.
Created by: Laylani colon
 

 



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