The mysterious 'Great Attractor' pulling the Milky Way galaxy off course : Short Wave
Briefly

Earth's rotation, orbit around the sun, Milky Way's orbit, and universal expansion cause you to move constantly in various directions at significant speeds.
Something mysterious, the Great Attractor, is pulling our galactic neighborhood off course at over one million miles per hour, but the Milky Way's obstruction hinders observation.
The Zone of Avoidance, obscured by Milky Way's stars and dust, hides details about the Great Attractor's effects, leaving scientists in search of answers.
The supercluster Laniakea, possibly responsible for the deviation, adds to the cosmic mysteries that researchers are striving to unravel.
Read at www.npr.org
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