Russian company Orbital Technologies is planning to open the world’s first space hotel in 2016. Innovative hot...

A curious correlation between the mass of a galaxy's central black hole and the velocity of stars in a vast, roughly spherical structu...

NASA's Spitzer Space Telescope took this image of a baby star sprouting two identical jets (green lines emanating from fuzzy star). The...

  Merging Galaxy Cluster Abell 520 This composite image shows the distribution of dark matter, galaxies, and hot gas in the core of the...