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«Astrophysics and Aerospace»

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11 Fascinating Facts About Our Milky Way Galaxy.
03- Nobody knows how much the Milky Way weighs.

On a related note, astronomers are still unsure exactly how much our galaxy weighs, with estimates ranging from 700 billion to 2 trillion times the mass of our sun. Getting a better grasp is no easy task. Most of the Milky Way's mass — perhaps 85 percent — is in the form of dark matter, which gives off no light and so is impossible to directly observe, according to astronomer Ekta Patel of the University of Arizona in Tucson. Her recent study looked at how strongly our galaxy's humongous mass gravitationally tugs on smaller galaxies orbiting it and updated the estimate of the Milky Way's mass to 960 billion times the mass of the sun, Live Science previously reported.

Загружено 1 месяц назад с www.livescience.com

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