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Planetary Picture of the Day - Week of February 26, 2024

Planetary Picture of the Day - Week of February 26, 2024

PPOD Collage

Planetary Picture of the Day
Week of February 26, 2024

Welcome to our weekly recap of our Planetary Picture of the Day (PPOD)!
Dunes on Mars, ridges on Europa, and volcanic paterae on Io.


Monday, February 26, 2024

aerial view of a few black spots on Io
Credit: NASA / JPL-Caltech / Jason Major

Tvashtar Paterae on Io
An approximate natural-color view of the volcanic Tvashtar Paterae region of Io, made from images acquired by NASA's Galileo spacecraft on Feb. 22, 2000. For an idea of scale, the dark kidney-shaped patera near the center is about 50 kilometers long and 20 kilometers wide.


Tuesday, February 27, 2024

close up image of the various textures on Europa
Credit: NASA, via Ted Stryk

Cracks and Ridges on Europa
A closeup of Europa's complicated surface from Galileo on its 19th orbit of Jupiter in February 1999. This image shows cracks and ridges on Europa's surface that reveal a detailed geologic history that may be related to changing tidal forces as Europa orbits Jupiter.


Wednesday, February 28, 2024

black and white image of the dots on the dunes of Mars, dots resembling ants.
Credit: NASA/JPL-Caltech/University of Arizona

The Dotted Dunes of Mars
As spring dawns on the Northern Hemisphere of Mars, dunes of sand near the poles begin to defrost. Thinner regions of ice typically thaw first revealing sand whose darkness soaks in sunlight and accelerates the thaw. The process might involve sandy jets exploding through the thinning ice. By summer, the spots expand to encompass the entire dunes which are then completely thawed and dark. The carbon dioxide and water ice sublime in the thin atmosphere directly to gas.


Thursday, February 29, 2024

Close up, black and white image of a snowflake
Credit: MEE/Kurt Schenk

Micro Snowflake
This is a photomicrograph of a dendrite star snowflake captured with a Scanning Electron Microscope. Enjoy a beautiful image on this Leap Day!



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