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Mary Shafer ) wrote:
: On Tue, 13 Jan 2004 15:30:43 GMT, "Bruce Sterling Woodcock" : wrote: : : "Mike Rhino" wrote in message : news ![]() : ... : How about a case where one of the poles points in the direction of the : orbital plane? IOW, at one point in the orbit the north pole points at : the : sun and on the other side of the orbit the south pole points toward the : sun. Unlike the Earth's or Mars' ~25 deg. axis tilt this other is more : on : the order of a 90 deg. axis tilt. : : Uranus comes pretty close with an axis tilt of 97.86 degrees. : : http://www.solarviews.com/eng/uranus.htm : : And Pluto is about 120 degrees, and Venus about 180 degrees. : I'm confused here. How can you tell it's 120 deg, not 60? Or 180, : not 0? Is the northness of the pole based on rotation direction or : something? Yes, I believe that rotational direction is the issue WRT axis tilt. Eric : Mary : -- : Mary Shafer Retired aerospace research engineer : |
#42
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Unfortunately, this following rant isn't fiction, it's perhaps science
future, or at least it a whole lot more truth and honesty than you'll discover elsewhere. At least I don't have to impose any "so what's the difference" nor morals based upon the sorts of toilet "high standards and accountability" as those of our resident warlord. "Moon Dirt isn't just Moon Dirt, it's absolutely Everything Dirt" Even though water might become a nice sort of lunar attribute to discover, but it's the moon dirt that's invaluable for the survival of humanity, as well as for the future of survivable space explorations. The one absolute thing we can do efficiently from Earth, on behalf of the moon, is exporting of water to the moon. With few individuals needed on the surface or within the LSE-CM/ISS, water is not a problem, especially with Earth's global warming ongoing and entirely unchecked and only getting itself worse off, thus we've got way too much water. Exporting it as slush hydrogen and/or h2o2 is simply an alternative, whereas accommodating plain old h2o can be cheaply delivered via robotic landers with absolutely no fear of losing another astronaut nor chancing any contamination of the moon should something go terribly wrong. I have absolutely no doubts that once upon a time Mars had a sufficient atmosphere, and surface water, thereby a warmer and radiation protected environment, possibly even long enough to have sustained either natural evolution and/or of some well intended terraforming on behalf of establishing some life similar to human. Unfortunately, there are certain limits to which life and of it's DNA/RNA as we know it can coexist within the confines of what Mars has had to offer for the past few thousand years, and certainly things are not getting any better. Whereas Venus still offers a survivable atmospheric buffer zone that's also loaded with all sorts of natural energy opportunities. The more the likes of the Mars core cools itself off, the worse becomes any opportunity for that planet to revive itself, short of receiving a massive infusion of artificial energy, such as what 1000 terawatts per year as derived from our lunar He3 might have to offer. The moon never sustained life, but it may have provided itself as a truly long-range capable transporter and/or transponder of life, even of life as we know it. Some good readings: SADDAM HUSSEIN and The SAND PIRATES http://mittymax.com/Archive/0085-Sad...andPirates.htm The latest insults to this Mars/Moon injury: http://guthvenus.tripod.com/gv-moon-02.htm Some other recent updates: http://guthvenus.tripod.com/gv-gwb-moon.htm http://guthvenus.tripod.com/gv-interplanetary.htm http://guthvenus.tripod.com/moon-04.htm |
#43
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John Schutkeker wrote in message . 92...
(Brad Guth) wrote in om: navigate itself through the crystal clear CO2 ocean of Venus. ??? What's your dumbfounded problem with that? Venus atmospheric CO2 is crystal clear below those cool nighttime clouds, as well as relatively calm, and the density is nearly 1/12th that of water here on Earth. Taking into account the 91% gravity and of the 65+kg/m3 of buoyancy, with that you could literally "go fish". Actually the density within a Venus death valley is more like 85+kg/m3, and that only gets cooler and denser at night, a nighttime that's a season of 2900+ hours worth. As for the moon may have never sustained life, but it may have provided itself as a truly long-range capable transporter and/or transponder of life, even of life as we know it. Some good readings: SADDAM HUSSEIN and The SAND PIRATES http://mittymax.com/Archive/0085-Sad...andPirates.htm The latest insults to this Mars/Moon injury: http://guthvenus.tripod.com/gv-moon-02.htm Some other recent updates: http://guthvenus.tripod.com/gv-gwb-moon.htm http://guthvenus.tripod.com/gv-interplanetary.htm http://guthvenus.tripod.com/moon-04.htm |
#44
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Henry Spencer wrote:
No, what quickly settled Pluto's axial tilt was the discovery of Charon (Pluto's moon) in the early 1980s. 1978. I'll pick up my T-shirt at Noreascon. -- Keith F. Lynch - - http://keithlynch.net/ I always welcome replies to my e-mail, postings, and web pages, but unsolicited bulk e-mail (spam) is not acceptable. Please do not send me HTML, "rich text," or attachments, as all such email is discarded unread. |
#45
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Keith F. Lynch ) wrote:
: Henry Spencer wrote: : No, what quickly settled Pluto's axial tilt was the discovery of : Charon (Pluto's moon) in the early 1980s. : 1978. What came fisr the discovery of Neptune's rings or Pluto's moon? : I'll pick up my T-shirt at Noreascon. Hold on to your shirt... Eric : -- : Keith F. Lynch - - http://keithlynch.net/ : I always welcome replies to my e-mail, postings, and web pages, but : unsolicited bulk e-mail (spam) is not acceptable. Please do not send me : HTML, "rich text," or attachments, as all such email is discarded unread. |
#46
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Henry Spencer wrote:
No, what quickly settled Pluto's axial tilt was the discovery of Charon (Pluto's moon) in the early 1980s. Keith F. Lynch ) wrote: 1978. Eric Chomko wrote: What came fisr the discovery of Neptune's rings or Pluto's moon? Pluto's moon. Neptune's rings were first detected by a stellar occultation in 1983. And were confirmed by Voyager 2 in 1989. Since 1989, Pluto has been the only planet in our solar system never to have been visited by a probe. -- Keith F. Lynch - - http://keithlynch.net/ I always welcome replies to my e-mail, postings, and web pages, but unsolicited bulk e-mail (spam) is not acceptable. Please do not send me HTML, "rich text," or attachments, as all such email is discarded unread. |
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