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Celestial Bodies

Planetary Science - FOSS

TermDefinition
celestial relating to the sky or outer space
stars give off light and heat energy through nuclear fusion in their cores
planet large celestial bodies that orbit stars
natural satellite moon
dwarf planet smaller celestial bodies that are similar to both planets and asteroids
asteroid a rocky object that is not a planet, but orbits the sun
meteor an asteroid that enters the Earth's atmosphere
comet an icy body from the outer parts of our solar system
black hole a region of space where gravity is so strong that nothing, no even light, can escape it's grasp.
NASA National Aeronautics and Space Administration - explores and studies celestial bodies
solar system the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets. The planets of the solar system are (in order of distance from the sun) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
galaxy collections of stars, planets, and other celestial objects bound together by gravity.
ISS a hub for scientific research and international cooperation in space.
James Webb telescope a telescope that is deep in space and captures images further away and clearer than ever before.
AU (Astronomical Unit) about the distance between the Earth and the sun.
light year the distance light travels in one year - 671 million miles per hour
Popular Earth Science sets

 



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