Imagine a planet as a giant ball made of different ingredients. If it has lots of light, fluffy stuff like clouds and smoke, it's called 'gaseous.' If it’s more like a solid rock or dirt ball, it's called 'solid.' The reason depends on how far the planet is from its star, and what kind of ingredients it started with.
Why Distance Matters
Planets closer to their stars get hotter. That heat keeps things in gas form. Planets farther away are cooler, so rocks and dirt can stay solid.
Examples
- If you were on a gaseous planet, you might float because there's so much light stuff around.
- A solid planet feels more like a brick, hard and heavy.
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See also
- What is the goal of current lunar exploration missions?
- What caused the recent issues with Boeing's Starliner spacecraft?
- What are list comprehensions?
- Why is NASA sending missions back to the Moon now?
- Who is European Extremely Large Telescope?
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Categories: Space · planets,solar system,astronomy