New computer models of Mars’ atmosphere are indicating that the Red Planet may experience rapidly-falling snowstorms at night, possibly sprinkling the surface below with a light layer of snow. It was previously assumed that snow that fell on Mars did so slowly, taking hours to drop a single mile, and typically evaporating before it reached the surface. But the new simulations show that ice crystals forming at night may only take about five to ten minutes to fall the same distance, explaining why NASA’s Phoenix lander observed a dusting of snow shortly after touchdown in 2008.
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NASA has announced the creation of a new position within the space agency titled "Planetary Protection Officer" (PPO), and is currently looking for candidates suitably qualified to protect the Earth — and other planets — from possible biological contamination. The salary for this singular position will be between $124,406 to $187,000 per year, with the successful applicant being responsible for preventing the transmission of potential contamination to and from Earth by astronauts and space probes during their expeditions.
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Two new discoveries regarding chemical ingredients that are associated with the formation of life on Titan have been announced. With its dense nitrogen, methane and ethane atmosphere, and liquid hydrocarbon seas, Titan is currently of interest to scientists looking to study an environment resembling Earth’s primordial atmosphere, and also are hopeful that the Saturnian moon’s complex chemical soup will yield evidence of extraterrestrial life.
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