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Space
NASA Image of the Day

Total Lunar Eclipse
15 Apr 2014
Total Lunar Eclipse
The United States was in a prime orbital position and time of day to view the eclipse on April 15, 2014. Depending on local weather conditions, the public got a spectacular view looking into the sky as the moon's appearance changed from bright orange to blood red to dark brown and perhaps gray. The eclipse is a phenomenon that occurs when the Earth, moon and sun are in perfect alignment, blanketing the moon in the Earth's shadow. The United States, in its entirety, will not be able to witness a full lunar eclipse again until 2019. This image was taken in San Jose, Calif. Image Credit: NASA Ames Research Center/Brian Day




THEMIS Image of the Day
Daily images from the Mars Odyssey THEMIS instrument.

Labeatis Fossae
16 Apr 2014

Streamlined Island
15 Apr 2014


HubbleSite
The definitive source of information about the Hubble Space Telescope
10 Apr 2014
Latest Picture from Hubble!

Hubble Stretches Stellar Tape Measure 10 Times Farther into Space




RedOrbit Images Of The Day - Mars
Two-Color Dunes
Two-Color Dunes
16 Apr 2014
Why are these dunes different colors? Sand on Mars is typically dark in tone, as it commonly derived from volcanic rocks like lava flows. In HiRISE enhanced color, which operates in long infrared wavelengths (beyond what the human eye can detect), surfaces like these dune crests are dark blue to purple. Sand comes in sizes that are ideal for surface transport by the wind, where sand ?hops? along forming bedforms, like these dunes after large amounts of time.

The lighter toned ?tan? or ?reddish? surfaces are indeed composed of a different material, but not as sand sized particle that makes up the bulk of these dunes. Rather, the light-toned smooth surfaces that dominate the lower, flatter areas of the dunes are a thin coating of global dust. Dust on Mars is composed of a variety of materials, including oxidized iron, like rust.

For a given wind gust, speeds are not constant at different heights. Rather, wind speeds are greater with height above the ground and wind energy drops to nearly zero at the surface. Dust persists on flatter dune areas, because wind energy there has not been sufficient to remove it, whereas ?dust free? higher-lying dune crests are subject to more intense winds, which ultimately conspire to make the appearance of two-color dunes.

Written by: Matthew Chojnacki

Credit: NASA/JPL/University of Arizona





RedOrbit Images Of The Day - Universe
Blood Moon
Blood Moon
16 Apr 2014
The United States was in a prime orbital position and time of day to view the eclipse on April 15, 2014. Depending on local weather conditions, the public got a spectacular view looking into the sky as the moon\'s appearance changed from bright orange to blood red to dark brown and perhaps gray. The eclipse is a phenomenon that occurs when the Earth, moon and sun are in perfect alignment, blanketing the moon in the Earth\'s shadow. The United States, in its entirety, will not be able to witness a full lunar eclipse again until 2019. This image was taken in San Jose, Calif.

Credit: NASA Ames Research Center/Brian Day





APOD
Spica, Mars, and Eclipsed Moon

A beautiful, reddened A beautiful, reddened






Fourmilab.ch



Flight Image of the Day
Lockheed P-38 Lightning during taxi
9 Apr 2014

AirSpace user kapnkrnch uploaded this great shot of a P-38 lightning, taken at the Air Power airshow in Zeltweg, Austria.

P38





More pictures
News Photos
ESA Top Multimedia
Osuga Valles topography
10 Apr 2014

Colour-coded topography map of the central portion of Osuga Valles. White and red show the highest terrains, while blue and purple show the deepest. The image is based on a digital terrain model of the region, from which the topography of the landscape has been derived.

The image was created using data acquired with the High Resolution Stereo Camera on Mars Express on 7 December 2013 during orbit 12 624. The image resolution is about 17 m per pixel and the image centre is at about 15S / 322E.




NASACast Video
This Week @ NASA, April 11, 2014
A ?go? to build OSIRIS-REx,Budget and security hearing,From here to Mars, and more...
11 Apr 2014


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