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Bookmark or Share- In Depth | Earth – NASA Solar System ExplorationOur home planet is the third planet from the Sun, and the only place we know of so far that’s inhabited by living things. While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface.
- Planet Compare - NASA Solar System ExplorationNASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
- In Depth | Our Solar System - NASA Solar System ExplorationOur solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.
- What is a Planet? | Planets – NASA Solar System ExplorationEveryone knows that Earth, Mars and Jupiter are planets. But both Pluto and Ceres were once considered planets until new discoveries triggered scientific debate about how to best describe them—a vigorous debate that continues to this day.
- NASA Planetary Science Highlights: 2021Our 2021 round-up of NASA planetary science is packed with the year’s most spectacular images, ground-breaking discoveries, and incredible mission events.
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