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Orbit


the curved path of an object around a planet, star, or moon

The planets of our solar system orbit the sun.

Orbit

radiation


fast-moving particles

Radiation from the sun reaches Earth as light and heat.

  radiation

engineers


people who plan, build, and test new designs to solve problems

Some engineers design spacecrafts.

engineers

gas giant


a large planet composed mostly of gases

Jupiter, Saturn, Uranus, and Neptune are our solar system’s gas giants.

gas giant

core


the innermost layer(s) of a planet

Scientists hope to learn what Jupiter’s core is made of.

  core
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