Space

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What is a comet?

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A comet is a small solar system body made of ice, dust, and rocky material that, when close to the Sun, develops a glowing coma and a tail due to the sublimation of its ices.

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What is a meteor?

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A meteor is a small particle from space that burns up upon entering Earth's atmosphere, creating a streak of light in the sky, often referred to as a 'shooting star'.

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What is a meteorite?

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A meteorite is a solid fragment of a meteoroid that survives its passage through the Earth's atmosphere and lands on the surface.

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What are the inner planets also known as?

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The inner planets are also known as terrestrial planets, which are primarily composed of rock and metal.

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What are the outer planets primarily composed of?

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The outer planets, also known as gas giants, are primarily composed of gases such as hydrogen and helium.

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What is a galaxy?

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A galaxy is a massive system that consists of stars, star clusters, gas, dust, and dark matter, all bound together by gravity.

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What is a spiral galaxy?

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A spiral galaxy is a type of galaxy characterized by its spiral arms that wind outward from the center, containing stars, gas, and dust.

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What is an elliptical galaxy?

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An elliptical galaxy is a type of galaxy that has an ellipsoidal shape and lacks the distinct arms found in spiral galaxies, primarily composed of older stars.

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What is an irregular galaxy?

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An irregular galaxy is a galaxy that does not have a distinct regular shape, often containing a mix of young and old stars.

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What is the Milky Way?

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The Milky Way is the galaxy that contains our solar system, characterized by its spiral shape and containing billions of stars.