Where do stars we see at night come from? Newly confirmed streams of stars - thought to be coming to our Milky Way from other galaxies - suggest not all Milky Way were born here.
Our sun moves around the center of the galaxy, toward the star Vega. Astronomers call this motion the apex of the sun's way. One circuit - about 230 million years - is called a cosmic year.
Juan Manuel Pérez Rayego in Mérida, Mexico wrote Monday morning: "Mercury down, moon and Saturn above, before a cold dawn." More photos of morning planets here.
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