The Andromeda Galaxy is a giant swirl of around a trillion stars just down the street from the Milky Way. But billions of years from now, it will collide with our home galaxy. On a clear night away from city … Read More
Imaged by the Gemini Observatory in Hawaii, the galaxies NGC 5394 (the smaller one, on the right) and NGC 5395 (the larger one, on the left) are in the middle of colliding over the span of millions of years. It … Read More
Scientists have long been aware of the fact that galaxies are growing in volume when they swallow up other, smaller galaxies. This process is part of the cosmic evolution. Evidence of this is the cosmic auras (halo) in which … Read More