Autor Wątek: Europa Multiple-Flyby Mission - EMFM (Europa Clipper)  (Przeczytany 7883 razy)

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Odp: Europa Multiple-Flyby Mission - EMFM (Europa Clipper)
« Odpowiedź #60 dnia: Lipiec 14, 2018, 09:18 »
Przedstawiono symulację przemieszczania się wód oceanicznych na Europie.
Jeśli hipoteza transportu wody ku powierzchni okaże się trafna , to sonda Europa Clipper  będzie zbierać dane o zamarzniętych wodach Europy po ok. milionie lat po  ich uformowaniu , co i  tak byłoby bardzo młodą strukturę do badania.

Europa’s Ocean Ascending
July 3, 2018



(...) The animation is a two-dimensional simulation of a possible cross-section of a band running through Europa's ice shell. At the extreme bottom is Europa's ocean, and the thick white line across the top represents the moon's surface ice. The midsection is the bulk of Europa's ice shell, with warmer colors (red, orange, yellow) representing stronger, more rigid ice. Depth is marked on the left side of the animation while numbers on the bottom measure distance from the center of the band feature on Europa's surface. Bands on Europa and Ganymede are typically tens of miles wide and hundreds of miles long. Numbers at the top mark the passage of time in thousands of years.

As the animation runs forward, the ice shell is deformed by gravitational interactions with Jupiter. The cold, brittle ice at the surface gets pulled apart. At the same time, faults in the upper ice form, heal, and re-form (visible as diagonal yellow, green and blue lines in the upper center of the animation). The churning material that quickly fills the bottom half of the view is a collection of tiny white dots representing bits of Europa's ocean that have been frozen into the bottom of Europa's ice shell (i.e. where the liquid ocean is in contact with the frozen shell). (...)

https://www.nasa.gov/feature/jpl/europa-s-ocean-ascending

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Odp: Europa Multiple-Flyby Mission - EMFM (Europa Clipper)
« Odpowiedź #61 dnia: Styczeń 23, 2019, 11:41 »
W styczniowym numerze National Geographic jest artykuł o poszukiwaniu życia pozaziemskiego. Trochę tam piszą o Europa Clipper więc link do arta załączam tutaj, żeby rozruszać ten wątek. Poza tym dołączam link do artykułu na blogu Billa Nye o misji Europa Clipper  :)

https://www.nationalgeographic.com/astrobiology/

https://news.nationalgeographic.com/news/2014/06/140618-europa-bill-nye-jupiter-extraterrestrial-life-nasa/

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Odp: Europa Multiple-Flyby Mission - EMFM (Europa Clipper)
« Odpowiedź #62 dnia: Marzec 21, 2019, 11:14 »
jako, że projekt jest na wczesnym etapie prac, to możliwe było usunięcie instrumentu ICEMAG z powodu dużego ryzyka niepowodzenia.

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Similar concerns came from the Outer Planets Assessment Group, an advisory panel that released “special findings” about ICEMAG March 13 outside of its usual cycle of meetings. “To those not involved in the process, this news came as a complete surprise,” the group said of the decision to remove ICEMAG. “We encourage NASA to ensure that this or any other termination decision is transparent, and avoid the perception that this [principal investigator]-led experiment team received a seemingly punitive decision that is disproportionate to the challenges faced by the team.”

Glaze said that cost alone was not the reason for removing ICEMAG. “The emphasis is not so much on the overall cost growth but on the other risks that were inherent in the design and the approach that was going forward,” she said. “Most of the concern had to do with the future risks and the fact that instrument was not stabilizing.”

Artykuły astronautyczne