jose fonseca

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jose fonseca
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How long to orbit Milky Way’s center? | EarthSky 11/28/16 One journey of our sun and planets around the center of our Milky Way galaxy is sometimes called a cosmic year. That’s approximately 225-250 million Earth-years. Artist's concept of solar system with the Milky Way galaxy in the background.

When we look up or down - away from the flat disk of the galaxy or toward it - we& seeing Milky Way stars. But we also see a few more distant objects, visible to the eye alone.