HD - NASA's Jet Propulsion Laboratory

Saturn's north pole is now tilted towards Earth, giving us the best view of the rings since 2006.

This animation illustrates the painstaking work performed by scientists to extract the oldest light in our universe, called the cosmic microwave background, from maps of the whole sky taken by the Planck mission.

This artist's animation depicts the "life" of a photon, or particle of light, as it travels across space and time, from the very early universe to the Planck satellite.

What is "solar conjunction," and how does it affect communications with our spacecraft at Mars? Learn more in this 60-second video.

Curiosity's analyzed rock sample proves ancient Mars could have supported living microbes.

Has Mars ever had the right ingredients for life? What are organic molecules, and what can they tell us about the history of Mars? Learn more in this 60-second video from NASA's Jet Propulsion Laboratory.

Has Mars ever had the right ingredients for life? What are organic molecules, and what can they tell us about the history of Mars? Learn more in this 60-second video from NASA's Jet Propulsion Laboratory.

The first of this year's two potential bright comets is visible for those who can see low on the western horizon and find out which spacecraft is on a 10-year mission to catch up with another comet.

NASA/JPL researcher Alberto Behar joins an international Antarctic expedition to investigate a subglacial lake.

Curiosity rover obtains the first sample ever collected from the interior of a rock on another planet.

This animation of NASA's Curiosity rover shows the complicated suite of operations involved in conducting the rover's first rock sample drilling on Mars and transferring the sample to the rover's scoop for inspection.

This video clip shows moments during a demonstration of drilling into a rock at NASA's Jet Propulsion Laboratory, Pasadena, Calif., with a test double of the Mars rover Curiosity. The drill combines hammering and rotation motions of the bit.

This 73-frame movie of asteroid 2012 DA14 was generated from data obtained by NASA's Goldstone Solar System Radar on the night of Feb. 15 to 16, 2013. The observations were made as the asteroid was moving away from Earth.

This set of images from the La Sagra Sky Survey, operated by the Astronomical Observatory of Mallorca in Spain, shows the passage of asteroid 2012 DA14 shortly after its closest - and safe -- approach to Earth. The images were taken around 12:59 p.m. PST (3:59 p.m. EST, or 20:59 UTC) on Feb. 15, 2013.

Movie showing asteroid 2012 DA14 flying safely by Earth, as seen by the Gingin Observatory in Australia around the time of its closest approach.