Editing Talk:1244: Six Words
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:::::::::::I see where you get the Pluto thing, and I can see where the developers were going with that. The idea is that Pluto hasn't cleared its own orbit. But Pluto crosses Neptune, whereas Eeloo crosses Jool. That's a big difference in terms of distance from the sun. The NASA study's diagrams did use Jupiter in the diagrams, but you're right in that they didn't dismiss the use of other objects. [[User:AlanSE|AlanSE]] ([[User talk:AlanSE|talk]]) 23:18, 30 July 2013 (UTC) | :::::::::::I see where you get the Pluto thing, and I can see where the developers were going with that. The idea is that Pluto hasn't cleared its own orbit. But Pluto crosses Neptune, whereas Eeloo crosses Jool. That's a big difference in terms of distance from the sun. The NASA study's diagrams did use Jupiter in the diagrams, but you're right in that they didn't dismiss the use of other objects. [[User:AlanSE|AlanSE]] ([[User talk:AlanSE|talk]]) 23:18, 30 July 2013 (UTC) | ||
::::::::::::I find the Jupiter explanation more plausible. Not only it is more consistent with the diagram (as far as body sizes and configuration, but also orbit shape, which would be a much narrower ellipse with periapsis near Venus and apoapsis in the Kuiper Belt), but also flyby around a Kuiper Belt body would be quite pointless: its low mass would make it a particularly lousy target for both gravity assist and Oberth maneuver - and yes, you only need a small velocity change at such distances to head for the Sun, but you could just as well do a deep space maneuver in empty space without any Kuiper Belt object nearby; its presence or non-presence would make little difference. - More importantly though, the whole travel so far outwards would be completely unnecessary, because Jupiter's gravity is already sufficient to send a spacecraft on a close Sun flyby trajectory (or even straight into the Sun, if desired) with a ''single unpowered flyby'', no engine burn needed at all. Saving lots of time and/or fuel (as the unnecessary detour via Kuiper Belt would take more fuel/flybys than a simple trip to Jupiter, not even mentioning the roundtrip duration). The reference to Kuiper Belt is explained just as easily with that being the intended mission target (also following from the word order, Oberth-Kuiper, more logical for Kuiper Belt visit after the Oberth maneuver, rather than before). --[[Special:Contributions/78.102.107.37|78.102.107.37]] 12:12, 31 July 2013 (UTC) | ::::::::::::I find the Jupiter explanation more plausible. Not only it is more consistent with the diagram (as far as body sizes and configuration, but also orbit shape, which would be a much narrower ellipse with periapsis near Venus and apoapsis in the Kuiper Belt), but also flyby around a Kuiper Belt body would be quite pointless: its low mass would make it a particularly lousy target for both gravity assist and Oberth maneuver - and yes, you only need a small velocity change at such distances to head for the Sun, but you could just as well do a deep space maneuver in empty space without any Kuiper Belt object nearby; its presence or non-presence would make little difference. - More importantly though, the whole travel so far outwards would be completely unnecessary, because Jupiter's gravity is already sufficient to send a spacecraft on a close Sun flyby trajectory (or even straight into the Sun, if desired) with a ''single unpowered flyby'', no engine burn needed at all. Saving lots of time and/or fuel (as the unnecessary detour via Kuiper Belt would take more fuel/flybys than a simple trip to Jupiter, not even mentioning the roundtrip duration). The reference to Kuiper Belt is explained just as easily with that being the intended mission target (also following from the word order, Oberth-Kuiper, more logical for Kuiper Belt visit after the Oberth maneuver, rather than before). --[[Special:Contributions/78.102.107.37|78.102.107.37]] 12:12, 31 July 2013 (UTC) | ||
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;strictly an orbiter shop | ;strictly an orbiter shop | ||
According to this [http://news.cnet.com/8301-1023_3-57495117-93/mars-curiosity-rover-team-prefers-macs-to-pcs/] that is not true. [[Special:Contributions/212.90.151.90|212.90.151.90]] 11:59, 29 July 2013 (UTC) | According to this [http://news.cnet.com/8301-1023_3-57495117-93/mars-curiosity-rover-team-prefers-macs-to-pcs/] that is not true. [[Special:Contributions/212.90.151.90|212.90.151.90]] 11:59, 29 July 2013 (UTC) |