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
For the first time ever, astronomers have witnessed a black hole swallowing a star. The event took place 150 million years ago in a pair of colliding galaxies called Arp 299. The black hole was 20 million times larger than our own Sun, and was seen consuming a body twice the size of our stellar companion.Read More Black Hole Seen Eating Star for First Time Ever
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.
The earliest stars in the Universe formed just 250 million years after the big bang, according to astronomers working at the ALMA facility in Chile. Researchers also discovered the oldest oxygen ever detected, from just 500 million years after the creation of the Universe. These discoveries push back the time when astronomers believe starlight first filled the Cosmos.Read More First Stars Formed Just 250 Million Years After Big Bang
For the first time ever, a supernova is seen in the first moments it erupts. Amazingly, it was spotted by an amateur astronomer. This is his story.Read More Amateur Astronomer Victor Buso Spots Supernova in First Moments of Explosion
Dark Matter may be even stranger than we thought, according to new findings about the dwarf galaxies of galaxy Centaurus A.Read More Dwarf Galaxies Could Put a New Spin on Ideas of Dark Matter
An ancient galaxy could provide clues to the early history of the Universe.Read More Hubble Sneaks a Peek at Ancient Galaxy from The Dawn of the Cosmos