Mercury cowling parts. Our 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. The Moon was likely formed after a Mars-sized body collided with Earth several billion years ago. Oct 21, 2025 · Planets About Planets PLANETS Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune DWARF PLANETS Pluto Ceres Makemake Haumea Eris HYPOTHETICAL The brightest and largest object in our night sky, the Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It’s the only planet we know of inhabited entirely by robots. Our scientists and far-ranging robots explore the wild frontiers of our solar system. Titan is bigger than Earth's moon, and larger than even the planet Mercury. This mammoth moon is the only moon in the solar system with a dense atmosphere, and it’s the only world besides Earth that has standing bodies of liquid, including rivers, lakes and seas, on its surface. Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Earth's Moon is the only Moved Permanently The document has moved here. Earth's Moon is the only Jun 26, 2019 · Callisto and Jupiter’s three other largest moons were discovered in 1610 by Italian scientist Galileo Galilei.
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