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The Milky Way is the galaxy that includes the Solar System, with a diameter of 26.8 ± 1.1 kiloparsecs (87,400 ± 3,600 light-years ). It is a barred spiral galaxy with a supermassive black hole at its center and many satellite galaxies.
Laniakea Supercluster is the galaxy supercluster that contains the Milky Way and about 100,000 other nearby galaxies. It was defined in 2014 by a new method based on galaxy velocities and has four subparts: Virgo, Hydra–Centaurus, Great Attractor, and Antlia Wall.
The Galactic Center is the center of the Milky Way galaxy, where a supermassive black hole called Sagittarius A* is located. It is about 26,000 light-years away from Earth and has a dense stellar population, interstellar dust, and radio emission.
The Local Group is the galaxy group that includes the Milky Way, where Earth is located. It has a diameter of 10 million light-years and a mass of 2 × 10 12 solar masses, and consists of two collections of galaxies in a "dumbbell" shape.
Learn about the 61 small galaxies that orbit the Milky Way, their characteristics, types, and discovery history. See a map with clickable regions and a list of satellite galaxies with their names, diameters, distances, and magnitudes.
Orion Arm is a minor spiral arm in the Milky Way Galaxy that contains the Solar System and many bright stars and nebulae. Learn about its location, composition, form, and Messier objects in this comprehensive article.
A clickable map of the nearby circa one-sixth outer sector of the galaxy, thus clearly showing the Local Arm (Orion Arm) and neighboring arms - as well as the Great Orion Nebula (as a very luminous feature of the less bright Orion molecular cloud complex) and broad-clouds North America Nebula (and Pelican Nebula) which is an intrinsic part of the Radcliffe wave.
Learn about the position and size of Earth in the Solar System, the Milky Way galaxy and the observable universe. See tables, diagrams and references for different scales and features of Earth's location.