Ten Years Ago


Huygens_descentThese images of Saturn’s moon Titan were taken on 14 January, 2005 by the Huygens probe at four different altitudes. The images are flattened (Mercator) projections of the view from the descent imager/spectral radiometer on the probe as it landed on Titan’s surface.

Ten years ago, Huygens parachuted into the haze of the alien moon toward an uncertain fate. After a gentle descent lasting more than two hours, it landed with a thud on a frigid floodplain surrounded by icy cobblestones. This was the first landing on a moon in the outer solar system, Titan, the largest moon of Saturn.

Image Credit: ESA / NASA

Finding Saturn


pia08387_croppedAstronomers have paired the Cassini spacecraft with the National Science Foundation’s Very Long Baseline Array (VLBA) radio-telescope system to pinpoint the position of Saturn and its family of moons to within about 4 km. That’s about 50 times more precise than those provided by ground-based optical telescopes, improving out knowledge of Saturn’s orbit and benefiting spacecraft navigation and basic physics research.

Image Credit: NASA

Three Moons


3MoonsThe Cassini spacecraft has sent us this family photo of three of Saturn’s moons that are different from each other. The largest of the three, Tethys is round and has a variety of terrains across its surface. Hyperion (to the upper-left of Tethys) is the “wild one” with a chaotic spin, and Prometheus (lower-left) is a tiny moon that busies itself shepherding the F ring.

Image Credit: NASA