Lakes, Fans, Deltas and Streams: Geomorphic Constraints on the Hydrologic History of Gale Crater, Mars

It has been proposed that in Gale Crater, where the Curiosity rover landed in August 2012, lakes developed to various depths after the large central mound (informally referred to as Mt. Sharp) had evolved to a form close to its current topography. Using a combination of CTX and HiRISE imagery and CTX, HiRISE and HRSC topography, we have documented a sequence of rising and falling lake levels, thereby providing a possible relative timeline of the hydrologic events within Gale crater.

Attempts to explain water loss from Mars

Abstract:  The debate about whether or not Mars ever had life upon it centers on the issue of water.

Was there water on Mars?  If so, where has it gone?  One of the explanations for the water loss focuses on the idea that the solar wind is removing the water by acceleration ionospheric ions and removing them from Mars.  

Recurring Slope Lineae: Confirmation of shallow subsurface flowing water on Mars

David StillmanAbstract:  Recurring Slope Lineae (RSL) are narrow (0.5 to 5 m) dark albedo features that incrementally lengthen down steep slopes and reoccur each year. RSL are well correlated with temperature, as they lengthen as temperature increases and fade as temperature decreases.

Extending the search for ETI communication to near-infrared wavelengths

We are poised to take advantage of a remarkable confluence of technological advances and scientific opportunity. For the first time, very fast, wide bandwidth, high-gain, low noise near-infrared avalanche photo diode (APDs) detectors are available and reasonably priced. We are designing and constructing a new SETI instrument to search for direct evidence of interstellar communications via pulsed laser signals at near-infrared (900 - 1700 nm) wavelengths.

Sight-seeing in the 21st century -- ices, sand, water, and dust in motion on Mars

Humankind's earnest reconnaissance of Mars, made possible by advances in our technology, has progressed significantly over the past 150 years. Early ideas of vibrant macroscopic life on Mars in the late 19th and early 20th centuries gave way to a perception of a barren desert world 


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