Image Gallery: Enceladus and its geysers

Image Credit: NASA/JPL-Caltech/Michael Benson/Kinetikon Pictures
Enceladus and its geysers. Click image for larger version. Image Credit: NASA/JPL-Caltech/Michael Benson/Kinetikon Pictures

A beautiful image of Saturn’s moon Enceladus with its active water vapour geysers, taken by the Cassini spacecraft. The left side of the moon is lit by the Sun and the right side is illuminated by light reflected from Saturn, or “Saturnshine.” The geysers, over 100 known, originate from a subsurface global ocean and are known to contain water vapour, ice particles, salts and organics. The water vapour reaches the surface through cracks in the outer icy crust.

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Image Gallery: Conical hill and sand dunes in Ganges Chasma

Photo Credit: NASA/JPL/University of Arizona
Conical hill and sand dunes in Ganges Chasma. Click for larger image. Photo Credit: NASA/JPL/University of Arizona

Another odd but beautiful image of Mars, showing a cone-shaped hill with sand dunes wrapping around it. The formation is in the Ganges Chasma region, and the image was taken by the HiRISE camera on the Mars Reconnaissance Orbiter. Mars has a lot of diverse geology, and this is another good example of that. Original images are here.

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Image Gallery: the hazy blue atmosphere of Pluto

The hazy blue atmosphere of Pluto. @NASA/JPL/Roman Tkachenko
The hazy blue atmosphere of Pluto. Image Credit: NASA/JHU-APL/SwRI/Roman Tkachenko

Another beautiful view of Pluto, taken by New Horizons as it passed by the dwarf planet on July 14, 2015. Pluto is backlit by the Sun, showing the hazy blue colour of its thin atmosphere, a view never possible from Earth. Image processing by Roman Tkachenko. It is also now the current header image for the blog. Larger version available here.

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Image Gallery: foothills of Mount Sharp (white-balanced)

Image Credit: NASA/JPL-Caltech/MSSS
Image Credit: NASA/JPL-Caltech/MSSS

Another beautiful panoramic image of the foothills of Mount Sharp, taken by Curiosity on Sep. 9, 2015. The mesas, buttes and valleys can be seen in greater detail as the rover keeps getting closer. The image has been white-balanced to show the terrain under more Earth-like lighting conditions. The full-size version of the image is available here.

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Image Gallery: Martian ‘spoons’ and ‘needles’

"Spoon" #1 seen by Curiosity on sol 1089. Photo Credit: NASA/JPL-Caltech/MSSS
“Spoon” #1 seen by Curiosity on sol 1089. Photo Credit: NASA/JPL-Caltech/MSSS

Wind-eroded rocks on Mars can take many different forms, sometimes resembling common earthly objects. Some good new examples include these long, thin slivers of rock which look like “spoons” and “needles,” seen by the Curiosity rover recently on sols 1089 and 1087. These fragile formations are easier to form in Mars’ weaker gravity and thinner atmosphere and can last much longer than they would on Earth – a unique form of Martian “artwork.”

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