Scientists think there is an ocean within Jupiter's moon Europa. NASA-JPL astrobiologist Kevin Hand explains why scientists are so excited about the potential of this ice-covered world to answer one of humanity's most profound questions.

This extreme oasis of life deep in the Caribbean Sea may hold clues to life on other planetary bodies, including Jupiter's moon Europa.

Exoplanets can be pretty weird places, but do their names have to be so weird, too? Watch and learn how the scientific community determines and categorizes these unique planets.

Right now the Rosetta spacecraft is in the orbit of the comet getting its lander ready for this historic event.

On November 12, the European Space Agency will attempt something that's never been done - make a soft landing on a comet. Find out how NASA is assisting.

Twin meteor showers feature the slow Taurids and the swift Leonids while Rosetta's lander Philae is scheduled to land on Comet C-G and transmit data from the surface about the comet's composition.

This movie begins with an animation (artist's rendering) of NASA's Mars Reconnaissance Orbiter spacecraft above Mars. The scene zooms into an "X-ray" view of the spacecraft, revealing the High Resolution Imaging Science Experiment (HiRISE) camera. The movie then transitions to a sequence of HiRISE images of the comet taken as it flew past Mars.

Take a jaunt on the wild side as NASA JPL Shuttle Radar Topography Mission conducts an aerial safari of Africa varied topography.

Mars program Chief Engineer Robert Shotwell describes Mars Odyssey's unprecedented view of comet Siding Spring as the comet sweeps by the Red Planet on Oct. 19 and how it will maneuver to take images.

JPL hosted a record 45,000 visitors during its 2014 Open House event on Oct. 11 and 12, which showcased the laboratory,s dozens of active missions exploring Earth, the solar system and the universe beyond with science exhibits, activities, movies and a space-themed photo booth.