Latest Stelios Kazantzidis Stories
OSU's Kazantzidis studies the behavior of galaxies, black holes through modeling & simulation at the Ohio Supercomputer Center.
Astronomers believe they have discovered the origin of our universe's first super-massive black holes, which formed some 13 billion years ago.
As scientists attempt to learn more about how galaxies evolve, an open question has been whether collisions with our dwarf galactic neighbors will one day tear apart the disk of the Milky Way.
Picture the Milky Way galaxy-a disk of stars and gas, a stellar spheroid and an enormous halo of dark matter. It spirals around a black hole that is supermassive-about three million solar masses. The Milky Way's total mass is about 100 billion solar masses-enormous to us but average among galaxies.
Ghostly galaxies composed almost entirely of dark matter speckle the universe. Unlike normal galaxies, these extreme systems contain very few stars and are almost devoid of gas.