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What are you doing with a meteorite?

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Billions of years ago, the continents separated.

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The moon is a satellite.

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Because the moon is not protected by any atmosphere.

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The moon is a satellite orbit around the Earth.

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The moon is a satellite of the Earth.

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The moon orbits the Earth.

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The Earth is a planet.

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Earth is a planet of the solar system.

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The atmosphere protects the Earth.

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We are divided into five layers.

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Meteorites are pieces of rock.

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The universe is formed many millions of years by the Big Bang.

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Saturn takes 29 years to go around the Sun because it's very far.

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Jupiter and Saturn have more than 60 moons.

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There are many galaxies in the universe.

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The space is infinite.

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Gravity is an invisible force.

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Sun is a star.

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Explosions produce energy.

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The Sun is far away from the Earth.

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The Sun produces light.

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The temperature of the Sun at the surface is 5,500 degrees.

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Jupiter is a big, big planet.

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Jupiter is a giant planet.

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It is 360 years old.

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Mars is a planet.

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Mars is a red and cold planet.

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There is one million cubic kilometers of gas in Mars.

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Mercury is a rocky planet like Venus, the Earth and Mars.

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The Sun is in the middle of the solar system.

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The Sun attracts the planets.

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The Earth orbits the Sun.

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The Earth orbits the Sun because of gravity force.

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The day is 24 hours.

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The Earth takes one year to go around the Sun.

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When the Earth is close to the Sun, it's summer.

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Summer is hot and we go to the beach.

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There is a season of the year.

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In winter, the ground is cold.

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The Earth has four seasons.

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Spring, summer, autumn and winter.

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When the Earth is cold.

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Do you like the snow? The snow is beautiful.

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Alice travels in spaceships.

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Do you think we will talk to an alien one day?

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NASA Jet Propulsion Laboratory, California Institute of Technology