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NGC 4414, una típica galaxia espiral en la constelación Coma Berenices, cuyo diámetro es aproximadamente 19 000 parsec y a una distancia aproximada de 20 millones de parsec. Una galaxia (del griego γαλαξίας ‘lácteo’) es un conjunto de estrellas, nubes de gas, planetas, polvo cósmico, materia oscura y energía unidas ...
Galaxies consist of stars, planets, and vast clouds of gas and dust, all bound together by gravity. The largest contain trillions of stars and can be more than a million light-years across. The smallest can contain a few thousand stars and span just a few hundred light-years. Most large galaxies have supermassive black holes at their centers ...
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. [1] [2] The word is derived from the Greek galaxias ( γαλαξίας ), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System.
24 de nov. de 2023 · Le portail GALAXIE est notamment dédié aux opérations relatives - à la qualification, - au recrutement (A.T.E.R ; maître de conférences ; professeur des universités ; astronome/physicien... ; P.R.A.G / P.R.C.E) ; - à l'avancement de grade des enseignants-chercheurs.
6 de may. de 2024 · It’s a small part of the Milky Way Galaxy. A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. When you look up at stars in the night sky, you’re seeing other stars in the Milky Way.
17 de abr. de 2019 · April 17, 2019. • 6 min read. Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held together by gravity. Nearly all large ...
25 de ago. de 2021 · Galaxies are groups of stars and other space objects held together by gravity. There are more than 100 billion galaxies in the universe, each presenting beautiful structures that can be seen in ...
