After a 4.9 billion mile journey spanning more than two decades and countless major discoveries, the Cassini probe will complete its long voyage by plunging into the clouds of Saturn on September 15th, in what NASA’s mission engineers are calling the probe’s "goodbye kiss". The intentional destruction of the probe is to avoid potentially contaminating the environments of Saturn’s moons — Enceladus in particular — in case extraterrestrial life might be found there.
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Asteroid 3122 Florence, a 4.5 kilometer (2.8 mile) wide near-Earth object, made a close pass to Earth on September 01, 2017, treating researchers with the closest known approach to Earth of an asteroid of this size. Thankfully, unlike recent close brushes with substantially smaller rocks, Florence’s orbit brought it no closer to us than 7 million kilometers (4,350,000 miles), more than eighteen times farther out than the Moon’s orbit.
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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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