Hexagon and Rings by Lunar and Planetary Institute on Flickr.A través de Flickr: Saturn’s north polar hexagon basks in the Sun’s light now that spring has come to the northern hemisphere. Many smaller storms dot the north polar region and Saturn’s signature rings, which appear to disappear on account of Saturn’s shadow, put in an appearance in the background. The north polar hexagon was first observed by Voyager. The image was taken with the Cassini spacecraft’s wide-angle camera on Nov. 27, 2012 using a spectral filter sensitive to wavelengths of near-infrared light centered at 750 nanometers. The view was acquired at a distance of approximately 403,000 miles (649,000 kilometers) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 21 degrees. Image scale is 22 miles (35 kilometers) per pixel.
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Hexagon and Rings by Lunar and Planetary Institute on Flickr.

A través de Flickr:
Saturn’s north polar hexagon basks in the Sun’s light now that spring has come to the northern hemisphere. Many smaller storms dot the north polar region and Saturn’s signature rings, which appear to disappear on account of Saturn’s shadow, put in an appearance in the background. The north polar hexagon was first observed by Voyager.

The image was taken with the Cassini spacecraft’s wide-angle camera on Nov. 27, 2012 using a spectral filter sensitive to wavelengths of near-infrared light centered at 750 nanometers. The view was acquired at a distance of approximately 403,000 miles (649,000 kilometers) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 21 degrees. Image scale is 22 miles (35 kilometers) per pixel.

Perspective View of Charitum Montes by Lunar and Planetary Institute on Flickr.A través de Flickr: The high-resolution stereo camera on ESAʼs Mars Express imaged the Charitum Montes region of the Red Planet on 18 June, near to Gale crater and the Argyre basin. Charitum Montes are a large group of rugged mountains extending over almost 1000 km and bounding the southernmost rim of the Argyre impact basin. They can be seen from Earth through larger telescope and were named by Eugène Michel Antoniadi (1870–1944) in his 1929 work La Planète Mars. Centered at around 53°S and 334°E, the image has a ground resolution of about 20 m per pixel. This image was taken during revolution 10778 on 18 June 2012.
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Perspective View of Charitum Montes by Lunar and Planetary Institute on Flickr.

A través de Flickr:
The high-resolution stereo camera on ESAʼs Mars Express imaged the Charitum Montes region of the Red Planet on 18 June, near to Gale crater and the Argyre basin. Charitum Montes are a large group of rugged mountains extending over almost 1000 km and bounding the southernmost rim of the Argyre impact basin. They can be seen from Earth through larger telescope and were named by Eugène Michel Antoniadi (1870–1944) in his 1929 work La Planète Mars.

Centered at around 53°S and 334°E, the image has a ground resolution of about 20 m per pixel. This image was taken during revolution 10778 on 18 June 2012.

Titan’s Nile-Like River Valley by Lunar and Planetary Institute on Flickr.A través de Flickr: This image from NASA’s Cassini spacecraft shows a vast river system on Saturn’s moon Titan. It is the first time images from space have revealed a river system so vast and in such high resolution anywhere other than Earth. The image was acquired on Sept. 26, 2012, on Cassini’s 87th close flyby of Titan. The river valley crosses Titan’s north polar region and runs into Ligeia Mare, one of the three great seas in the high northern latitudes of Saturn’s moon Titan. It stretches more than 200 miles (400 kilometers). Scientists deduce that the river is filled with liquid because it appears dark along its entire extent in the high-resolution radar image, indicating a smooth surface. That liquid is presumably ethane mixed with methane, the former having been positively identified in 2008 by Cassini’s visual and infrared mapping spectrometer at the lake known as Ontario Lacus in Titan’s southern hemisphere. The relative straightness of the river valley suggests it follows the trace of at least one fault, similar to other large rivers running into the southern margin of Ligeia Mare. North is toward the top of this image.
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Titan’s Nile-Like River Valley by Lunar and Planetary Institute on Flickr.

A través de Flickr:
This image from NASA’s Cassini spacecraft shows a vast river system on Saturn’s moon Titan.
It is the first time images from space have revealed a river system so vast and in such high resolution anywhere other than Earth.

The image was acquired on Sept. 26, 2012, on Cassini’s 87th close flyby of Titan. The river valley crosses Titan’s north polar region and runs into Ligeia Mare, one of the three great seas in the high northern latitudes of Saturn’s moon Titan. It stretches more than 200 miles (400 kilometers).

Scientists deduce that the river is filled with liquid because it appears dark along its entire extent in the high-resolution radar image, indicating a smooth surface. That liquid is presumably ethane mixed with methane, the former having been positively identified in 2008 by Cassini’s visual and infrared mapping spectrometer at the lake known as Ontario Lacus in Titan’s southern hemisphere. The relative straightness of the river valley suggests it follows the trace of at least one fault, similar to other large rivers running into the southern margin of Ligeia Mare.

North is toward the top of this image.

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