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Today, Mars is believed to be largely tectonically inactive. However, observational evidence and its interpretation suggests that this was not the case further back in Mars's geological history. At the scale of the whole planet, two large scale physiographic features are apparent on the surface. The first is that the northern hemisphere of the ...
Generalised geological map of Mars [1] Mars as seen by the Hubble Space Telescope. The geology of Mars is the scientific study of the surface, crust, and interior of the planet Mars. It emphasizes the composition, structure, history, and physical processes that shape the planet. It is analogous to the field of terrestrial geology.
[31] [32] Mars has twice as much iron oxide in its outer layer as Earth does, despite their supposed similar origin. It is thought that Earth, being hotter, transported much of the iron downwards in the 1,800 kilometres (1,118 mi) deep, 3,200 °C (5,792 °F ), lava seas of the early planet, while Mars, with a lower lava temperature of 2,200 °C ...
NASA's Mars Reconnaissance Orbiter is an incredibly useful tool that allows scientists to image areas of the planet's surface with ultra-sharp detail. It has revealed many things about Mars and ...
In 2006, researchers using data from the OMEGA Visible and Infrared Mineralogical Mapping Spectrometer on board the Mars Express orbiter proposed an alternative Martian timescale based on the predominant type of mineral alteration that occurred on Mars due to different styles of chemical weathering in the planet's past. They proposed dividing ...
[8] [9] Mars and particularly Venus have evidence of prior resurfacing events, but appear to be tectonically quiescent today. Geodynamic inferences about Solar System planets have been extrapolated to exoplanets in order to constrain what kind of geodynamic regimes can be expected given a set of physical criterion such as planetary radius ...
Star Trek novelist Dayton Ward wrote, "For the World is Hollow and I Have Touched the Sky" is a decent idea, in and of itself. The idea of a generational ship encased in an asteroid is well worth exploring. After all, variations on the concept were already a staple of science fiction long before Star Trek came along. My biggest problem is why ...
The long-held rivalry between Star Wars and Star Trek had another opportunity to manifest itself this weekend. 'Star Trek' symbol on Mars continues 'feud' between Mark Hamill and William Shatner ...