Tag Archives: Hellas Basin

HRSC: Crashing into martian mud

An impactor smashing into an ice-rich surface gave rise to the complex flow features around this ancient crater on Mars. Impacts of comets and asteroids have shaped the surfaces of rocky planets and moons over the Solar System’s 4.6 billion … Continue reading

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HiRISE: Sulfates in the northwest Hellas region

Sulfates in the northwest Hellas region. Beautiful Mars series.

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THEMIS: Hellas Planitia in false color

THEMIS Image of the Day, February 13, 2017. Today’s false color image shows plains in the northern part of Hellas Planitia. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to … Continue reading

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THEMIS: Hellas basin’s Ausonia Montes

THEMIS Image of the Day, August 2, 2016. Today’s false color images show part of Ausonia Montes. The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. … Continue reading

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HiRISE: Meandering channel on Hellas’ rim

The central portion of this image features a mildly-winding depression that was carved by water, likely around four billion years ago shortly after the Hellas basin formed following a giant asteroid or comet impact. Water would have flowed from the … Continue reading

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HiRISE: Bedrock north of Terby Crater

This image samples the excellent bedrock exposures north of Terby Crater, which lies on the northern rim of the giant Hellas basin. An enhanced-color cutout shows a sample of this bedrock, which has a variety of colors and textures. The … Continue reading

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HRSC: Frosty Martian valleys

Nestled within the fractured rim of a vast impact basin on Mars are valley floors dusted in frost. At 2200 km wide and up to 9 km deep, the Hellas Basin is the largest impact crater on Mars. This scene, … Continue reading

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HiRISE: Clays exposed by an impact

Clays exposed by an impact in Tyrrhena Terra  — Tyrrhena Terra is south of the Martian equator and immediately northeast of the giant Hellas basin. Beautiful Mars series.

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HiRISE: Purple mountain’s majesty

This image of an isolated mountain in the Southern highlands reveals a large exposure of “purplish” bedrock. Since HiRISE color is shifted to longer wavelengths than visible color and given relative stretches, this really means that the bedrock is roughly … Continue reading

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HiRISE: Channel system & patterned ground near Hellas

In this image, we explore the southwestern floor of a 50-kilometer diameter unnamed crater, about 100 kilometers northeast of Hellas Basin. The crater’s rim is breached (see Google context image below) on both the north and south by a valley … Continue reading

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