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A committee of the Mars Exploration Program Analysis Group (MEPAG) has reviewed and updated the description of Special Regions on Mars as places where terrestrial organisms might replicate (per the COSPAR Planetary Protection Policy). This review and update was conducted by an international team (SR-SAG2) drawn from both the biological science and Mars(More)
IN 1913 (Journ. Gen. Vol. III, NO. 1) I published the first results of experiments on the inheritance of the three forms in the heterostyled species Oxalis valdiviana and Lythruw salioaric~. I hoped to be able to carry the enquiry to a definite conclusion, for the inheritance of the three distinct forms which go to make a single heterostyled trimorphic(More)
[1] We report on the results of a survey to document and characterize pedestal craters on Mars equatorward of 60 N and 65 S latitude. The identification of 2696 pedestal craters reveals a strong latitude dependence, with the vast majority found poleward of 33 N and 40 S. This latitudinal extent is correlated with many climate indicators consistent with the(More)
Some fresh impact craters on Ganymede have the overall ejecta morphology similar to Martian double-layer ejecta (DLE), with the exception of the crater Nergal that is most like Martian single layer ejecta (SLE) craters (as is the terrestrial crater Lonar). Similar craters also have been identified on Europa, but no outer ejecta layer has been found on these(More)
Introduction: The Catalog of Large Martian Impact Craters [1] was compiled from Viking 1:2M photomosaics around 1980 and contains information on 42,283 craters generally ≥5-km-diameter across the entire Martian surface. The Catalog is undergoing revision using MGS (MOLA) and Odyssey (THEMIS) data. We have completed the initial revision of northern(More)
In this paper, an uncommon use of parallel coordinates is illustrated using the Animator software. Animator is used to plot the parallel coordinates of objects in multi-dimensional space. Subsequently, the Animator software is used to animate the movement of individual objects, in this multi-dimensional space over time. Initial empirical studies of this(More)
[1] Pedestal craters on Mars are defined by an outwardfacing scarp forming a plateau perched tens of meters above the surrounding terrain. Their origin has been attributed to impact armoring of the surface and subsequent removal of inter-crater terrain by either eolian deflation or sublimation of an ice-rich substrate. We identified 2696 pedestal craters(More)
Mid-latitude pedestal craters on Mars offer crucial insights into the timing and extent of widespread icerich deposits during the Amazonian period. Our previous comprehensive analysis of pedestal craters strongly supports a climate-related formation mechanism, whereby pedestals result from impacts into ice-rich material at mid latitudes during periods of(More)
1. Reciprocals have always given like results. That is, there is no evidence that the ♂ and ♀ gametes carry different characters. 2. Long-styled plants selfed give Longs only. Long is the pure recessive, as in Primula. 3. There are certainly two differently constituted Mid-styled Oxalis, giving different ratios with the same Short. One gives no Longs at(More)