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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.
Learn about the Sun and the objects that orbit it, including the eight planets, the nine dwarf planets, and the small bodies such as asteroids, comets, and moons. Explore the formation, evolution, and features of the Solar System and its place in the Milky Way galaxy.
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 night sky is not completely dark, even in the absence of moonlight and city lights, due to various sources of light such as airglow, scattering, and artificial pollution. Learn how the brightness of the sky varies over the day and night, and how it affects the visibility and appearance of celestial objects like stars, planets, and the Moon.
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.
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.
Citizen scientists spotted an object zipping through the Milky Way at more than 1 million miles an hour, and a new study shows it could be a rare hypervelocity star.
The KBC Void (or Local Hole) is a large, empty region of space that contains the Milky Way and the Laniakea Supercluster. It is debated whether it is consistent with the ΛCDM model and whether it affects the measurement of the Hubble constant.