Tag Archives: High Resolution Imaging Science Experiment

HiRISE: The enduring charm of spiders

Araneiform terrain (colloquially: spider-like terrain) is located in the south polar region of Mars and evolves in appearance over the spring and summer. In the season shown here, the thin bright lines on the surface (the spider legs) are troughs … Continue reading

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HiRISE: Swiss cheese on a red planet

The Martian south polar cap is a layer of carbon dioxide ice, full of pits that make it look like Swiss cheese. The pits form when the Sun heats the ice and makes it sublimate (transform from a solid to … Continue reading

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HiRISE: Layering and faulting in layered deposits in Candor Chasma

Layering and faulting in layered deposits in Candor Chasma. This observation was a last minute one done as nadir-only, meaning when the camera is pointing straight down at the surface, as opposed to an angle when we want to create … Continue reading

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HiRISE: Eastern rim of a Terra Cimmeria crater

Eastern rim of a crater in Terra Cimmeria. Beautiful Mars series. [More at links]

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HiRISE: Layers in a crater near Phlegra Montes

Layers in a crater near Phlegra Montes. The objective of this observation is to examine layers near the top of a crater. Beautiful Mars series. [More at links]

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HiRISE: Delta-like lobes in Aeolis Dorsa

Delta-like lobes in Aeolis Dorsa. Branching fluvial deposits appear similar to others at Aeolis Dorsa which have been interpreted as delta-like. With HiRISE images and elevation models we would be able to measure deposit thicknesses more accurately. Observations like these … Continue reading

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HiRISE: Dunes in the shapes of Ts and Vs

Dunes in the shapes of Ts and Vs. They also look like funnel shapes. Beautiful Mars series. [More at links]

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HiRISE: Crater immediately east of Biblis Patera

A crater immediately to the east of Biblis Patera. Some questions include: (a) what is the “deposit” on the west side of the crater, seeming to cover the wall/floor interface? (b) what is the floor material; did lava come up … Continue reading

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HiRISE: Active dunes in Wirtz Crater

These gorgeous dunes are likely active, with ripples on their upwind slopes and dark streaks on their downwind slopes forming and changing due to wind-driven sand motion. This motion will also keep the dune brink (the edge between the two … Continue reading

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HiRISE: Spring frost on a cold world

Winter on Mars comes with a blanket of carbon dioxide snow. During the spring “thaw,” this snow evaporates into the atmosphere, lingering longest in the shallow depressions such as the troughs of polygon patterned ground. Enhanced color shows the carbon … Continue reading

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