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Bookmark or Share- In Depth | Sun – NASA Solar System ExplorationThe Sun is located in the Milky Way galaxy in a spiral arm called the Orion Spur that extends outward from the Sagittarius arm.
- In Depth | Our Solar System – NASA Solar System ExplorationThe planetary system we call home is located in an outer spiral arm of the Milky Way galaxy. 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 ...
- Galleries | Galileo – NASA Solar System ExplorationGalileo sparked the birth of modern astronomy with his observations of the Moon, phases of Venus, moons around Jupiter, sunspots, and the news that seemingly countless individual stars make up the Milky Way Galaxy.
- In Depth | Oumuamua – NASA Solar System ExplorationThe observations suggest this unusual object had been wandering through the Milky Way, unattached to any star system, for hundreds of millions of years before its chance encounter with our star system.
- Cosmic Chemistry: Cosmogony Cosmology - NASA Solar System Explorationnow known as the Andromeda galaxy, establishing that this was a separate galaxy located far away from the Milky Way. Subsequent work by Hubble and others established that many of the faint mysterious patches of light in the night sky that vaguely had been called nebula were, in fact, galaxies.
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