More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA's ...

A rarely seen deep-sea oarfish that is believed to have inspired sea monster legends was spotted along the shores of Mexico as seen in a video captured by a beachgoer.

Beachgoers in Mexico were surprised to see a rare oarfish in shallow waters, in Japanese folklore an oarfish sighting is a ...