Alaskan Mountains Seen During IceBridge Transit

Alaskan mountains seen from high altitude aboard the NASA P-3B during the IceBridge transit flight from Thule to Fairbanks on March 21, 2013.

NASA's Operation IceBridge is an airborne science mission to study Earth's polar ice.

Image Credit: NASA/Goddard/Christy Hansen

Herschel Sees Through Ghostly Pillars

This Herschel image of the Eagle nebula shows the self-emission of the intensely cold nebula’s gas and dust as never seen before. Each color shows a different temperature of dust, from around 10 degrees above absolute zero (10 Kelvin or minus 442 degrees Fahrenheit) for the red, up to around 40 Kelvin, or minus 388 degrees Fahrenheit, for the blue. 

Herschel reveals the nebula's intricate tendril nature, with vast cavities forming an almost cave-like surrounding to the famous pillars, which appear almost ghostly in this view. The gas and dust provide the material for the star formation that is still under way inside this enigmatic nebula. 

Far-infrared light has been color-coded to 70 microns for blue and 160 microns for green using the Photodetector Array Camera, and 250 microns for red using the Spectral and Photometric Imaging Receiver. 

Herschel is a European Space Agency cornerstone mission, with science instruments provided by consortia of European institutes and with important participation by NASA. NASA's Herschel Project Office is based at NASA's Jet Propulsion Laboratory, Pasadena, Calif. JPL contributed mission-enabling technology for two of Herschel's three science instruments. The NASA Herschel Science Center, part of the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena, supports the United States astronomical community. Caltech manages JPL for NASA. 

Image Credit: ESA/Herschel/PACS/SPIRE/Hill, Motte, HOBYS Key Programme Consortium

Explanation from: http://www.nasa.gov/mission_pages/herschel/multimedia/pia15260.html

A Splendor Seldom Seen

NASA's Cassini spacecraft has delivered a glorious view of Saturn, taken while the spacecraft was in Saturn's shadow. The cameras were turned toward Saturn and the sun so that the planet and rings are backlit. (The sun is behind the planet, which is shielding the cameras from direct sunlight.) In addition to the visual splendor, this special, very-high-phase viewing geometry lets scientists study ring and atmosphere phenomena not easily seen at a lower phase. 

Since images like this can only be taken while the sun is behind the planet, this beautiful view is all the more precious for its rarity. The last time Cassini captured a view like this was in Sept. 2006, when it captured a mosaic processed to look like natural color, entitled "In Saturn's Shadow." In that mosaic, planet Earth put in a special appearance, making "In Saturn's Shadow" one of the most popular Cassini images to date. Earth does not appear in this mosaic as it is hidden behind the planet. 

Also captured in this image are two of Saturn's moons: Enceladus and Tethys. Both appear on the left side of the planet, below the rings. Enceladus is closer to the rings; Tethys is below and to the left. 

This view looks toward the non-illuminated side of the rings from about 19 degrees below the ring plane. 

Images taken using infrared, red and violet spectral filters were combined to create this enhanced-color view. The images were obtained with the Cassini spacecraft wide-angle camera on Oct. 17, 2012 at a distance of approximately 500,000 miles (800,000 kilometers) from Saturn. Image scale at Saturn is about 30 miles per pixel (50 kilometers per pixel). 

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo. 

Image Credit: NASA/JPL-Caltech/Space Science Institute

Explanation from: http://www.nasa.gov/mission_pages/cassini/multimedia/pia14934.html