The Andromeda Galaxy Was the Culprit – The Case of the Missing Galaxy

The Andromeda Galaxy, the closest large family of stars to the Milky Way, may be a galactic assassin. Astronomers from the University of Michigan have determined that this family of stars collided with another massive galaxy two billion years ago, nearly destroying it. Today, only the small dwarf galaxy, M32, remains, still located near Andromeda. In roughly four billion years, The Milky Way and Andromeda will collide, greatly altering both galaxies.

Read More The Andromeda Galaxy Was the Culprit – The Case of the Missing Galaxy
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Asteroid 2015 BZ509 may have joined Our Family of Planets from an Alien Solar System

An asteroid orbiting backwards around the Sun may have come from another solar system, according to astronomers in France.
Asteroid 2015 BZ509 is roughly two miles across, and orbits the Sun at roughly the same distance as Jupiter. Computer simulations suggest the object may have joined our planetary family four-and-a-half billion years ago, just as the Earth and other planets were being formed.

Read More Asteroid 2015 BZ509 may have joined Our Family of Planets from an Alien Solar System