4th Grade Science: Astronomy Tools

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What are stars?

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Stars are massive, luminous spheres of plasma held together by gravity. They are the fundamental building blocks of galaxies and are responsible for the production of elements through nuclear fusion.

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What are planets?

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Planets are celestial bodies that orbit a star, are massive enough to be rounded by their own gravity, and have cleared their orbital path of other debris.

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What are technological tools that astronomers use?

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Astronomers use a variety of technological tools such as telescopes, spectrometers, and space probes to observe and collect data about celestial objects and phenomena.