Scientists have discovered an enormous stream of super-hot gas erupting from a nearby galaxy, driven by a powerful black hole at its center. The jets stretch farther than the galaxy itself and spiral ...

What planet is most like Earth? Reseachers have identified several exoplanets similar to our planet, but none that are an exact twin. Learn how new technology could help aid in the search. Although ...

Although astronomers have directly imaged a few dozen gas giants on the scale of Jupiter, Earth-sized planets are too small and dim to be directly imaged. That's not to say there's a shortage of Earth ...