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The Milky Way as seen from Sajama National Park in Bolivia, an area with little light pollution. As viewed from Earth, the visible region of the Milky Way's galactic plane occupies an area of the sky that includes 30 constellations. [e] The Galactic Center lies in the direction of Sagittarius, where the Milky Way is brightest.
The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4.5 billion years between the two largest galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.
The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. [1] One galactic year is approximately 225 million Earth years. [2]
The Milky Way’s distinct appearance is the result of our vantage point from Earth, looking toward the dense center of the galaxy, where the stars and cosmic material are most concentrated.
Currently 59 satellite galaxies are part of the subgroup. [38] Local Group: 3 Mpc [a] 9.26×10 19: Group of at least 80 galaxies of which the Milky Way is a part. Dominated by Andromeda (the largest), the Milky Way and Triangulum; the remainder are dwarf galaxies. [39] Local Sheet: 7 Mpc 2.16×10 20
At first, it looks like a planet: dark, snow-speckled and slashed down the center by a deep red scar. But zoom in a little closer, and you realize you're looking at something much larger than a ...
The Local Group is the galaxy group that includes the Milky Way, where Earth is located. It has a total diameter of roughly 3 megaparsecs (10 million light-years ; 9 × 10 19 kilometres ), [ 1 ] and a total mass of the order of 2 × 10 12 solar masses (4 × 10 42 kg). [ 2 ]
The bars take shape when stars within spiral galaxies rotate in an orderly fashion, as they do in the Milky Way. Until now, astronomers didn’t believe early galaxies had enough stability for ...