atmosphere, the layer of gas surrounding a planet, orbit, the curved path an object follows around a larger object in space, galaxy, a massive group of stars, gas, and dust held together by gravity, satellite, an object that moves around a planet or star, microgravity, there is very little gravity, astronomer, a scientist who studies stars, planets, and space, experiment, a scientific test to learn something new, universe, everything that exists in space, including galaxies, stars, and planets, comet, a space object made of ice, dust, and rock that travels around the sun, exploration, the act of traveling and learning new things

Exploring Space

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