waashk/20ng huggingface dataset:
rls@uihepa.hep.uiuc.edu (Ray Swartz (Oh, that guy again)) writes:  >The gravity maneuvering that was used was to exploit 'fuzzy regions'.  These >are described by the inventor as exploiting the second-order perturbations in a >three body system.  The probe was launched into this region for the >earth-moon-sun system, where the perturbations affected it in such a way as to >allow it to go into lunar orbit without large expenditures of fuel to slow >down. The idea is that 'natural objects sometimes get captured without >expending fuel, we'll just find the trajectory that makes it possible". The >originator of the technique said that NASA wasn't interested, but that Japan >was because their probe was small and couldn't hold a lot of fuel for >deceleration.   I should probably re-post this with another title, so that the guys on the other thread would see that this is a practical use of "temporary orbits..."  Another possible temporary orbit:
nickh@CS.CMU.EDU (Nick Haines) writes:  >In article <stephens.734792933@ngis> stephens@geod.emr.ca (Dave Stephenson) writes:  >   Remember the first government scientist in the British Empire was >   the Astronomer Royal, who was paid [...] from the Department >   of Ordinance Budget (i.e. the military). Flamsteed House (the original >   RGO) was built out of Army Surplus Scrap ( A gate house at the Tower of >   London ?), and paid for by the sale of time expired gunpowder [...]  >At the time, astronomy was vital to the military, in that navigation >and cartography were of primary impoortance to the military, and good >cartography was impossible without good astronomy.  >The relevance these daysis somewhat less obvious.  >Nick  It still applies, except the astronomy these days is Very Long Baseline Radio Astronomy coupled to GPS and Satellite Laser Ranging. The data from NASA's and the Naval Observatory's (among others) is a vital  source of data for studies into crustal dynamics, Earth rotation, and purturbations. Every time there is a leap second added to the New Year, remember the military and science are still co-habiting nicely. The same VLBI was used to track Gallileo as it passed the Earth, and used so little fuel that it can afford to observe Ida.
In article <1993Apr26.184507.10511@aio.jsc.nasa.gov> kjenks@gothamcity.jsc.nasa.gov writes: >I know it's only wishful thinking, with our current President, >but this is from last fall: > >     "Is there life on Mars?  Maybe not now.  But there will be." >        -- Daniel S. Goldin, NASA Administrator, 24 August 1992 > >-- Ken Jenks, NASA/JSC/GM2, Space Shuttle Program Office >      kjenks@gothamcity.jsc.nasa.gov  (713) 483-4368  Lets hear it for Dan Goldin...now if he can only convince the rest of our federal government that the space program is a worth while investment!  I hope that I will live to see the day we walk on Mars, but we need to address the technical hurdles first!  If there's sufficient interest, maybe we should consider starting a sci.space group  devoted to the technical analysis of long-duration human spaceflight. Most of you regulars know that I'm interested in starting this analysis as soon as possible.
dillon comments that Space Food Sticks may have bad digestive properties.  I don't think so.  I think  most NASA food products were designed to be low fiber 'zero-residue' products so as to minimize the difficulties of waste disposal.  I'd doubt they'd deploy anything that caused whole sale GI distress.  There aren't enough plastic baggies in the world for a bad case of GI disease.
In article <1rbp6q$oai@access.digex.net>, prb@access.digex.com (Pat) writes: > In article <1993Apr22.214735.22733@Princeton.EDU> phoenix.Princeton.EDU!carlosn (Carlos G. Niederstrasser) writes: >>A transporter operator!?!?  That better be one important transport.  Usually   >>it is a nameless ensign who does the job.  For such a guest appearance I would   >>have expected a more visible/meaningful role. >  >  > Christian  Slater, only gota  cameo on ST6,   >  > and besides. >  > Maybe she can't act:-) >  > pat >   Better idea for use of NASA Shuttle Astronauts and Crew is have them be found lost in space after a accident with a worm hole or other space/time glitch..  Maybe age Jemison a few years (makeup and such) and have her as the only survivour of a failed shuttle mission that got lost..   Heh of late, they way they have been having shuttle problems in the media, anything can happen..   Imagine a Astronaut/Crew member to find themselves in the 24th Century as the object of interest of an alien civilization, maybe rescued or helped by the ST Enterprise...  I know Vegr and such was okay, but this could be better..
Hello, All!    I apologize, I haven't published my astro FTP list since March.   Now I haven't tested all the sites included into the list.  I   would notified all the people, you have stored some older issues   of my, there are now lots of changes.  Many sites have gone away:   They either do not exist any more or all the astro stuff have   removed.     The job keep this list is very hard, so all the notes and informat-   ion of changes, new sites, new contents etc. is welcome.    I would thank all the net people who give me information for the   newest version.      					regards,  					Veikko Makela
George William Herbert sez:  >Hmm.  $1 billion, lesse... I can probably launch 100 tons to LEO at >$200 million, in five years, which gives about 20 tons to the lunar >surface one-way.  Say five tons of that is a return vehicle and its >fuel, a bigger Mercury or something (might get that as low as two >tons), leaving fifteen tons for a one-man habitat and a year's supplies? >Gee, with that sort of mass margins I can build the systems off >the shelf for about another hundred million tops.  That leaves >about $700 million profit.  I like this idea 8-)  Let's see >if you guys can push someone to make it happen 8-) 8-)  I like your optimism, George.  I don't know doots about raising that kind of dough, but if you need people to split the work and the $700M, you just give me a ring :-)  Living alone for a year on the moon sounds horrid, but I'd even try that, if I got a bigger cut.  :-)  -Tommy Mac ------------------------------------------------------------------------- Tom McWilliams 517-355-2178 wk   \\ As the radius of vision increases, 18084tm@ibm.cl.msu.edu 336-9591 hm \\ the circumference of mystery grows.
Seems that the Mile-Long Billboard and any other inflateble space object/station or what ever have the same problems. (other than being a little bit different than the "normal" space ideas, such as trusses and shuttles)  But also dag and such.. Why not combine the discussion of how and fesibility to the same topic?  I personnelly liek the idea of a billboard in space. But problem. How do you service it? fly a shuttle/DC-1 to near it and then dismount and "fly" to it? Or what?? or havign a special docking section for shuttle/DC-1 docking?  Also what if the billboard springs a leak? Self sealing and such??   Just thinking (okay rambling)..  Also why must the now inflated billboard, not be covered in the inside by a harder substance (such as a polymer or other agent) and then the now "hard" billboard would be a now giant docking structure/space dock/station??
In my last post I referred to Michael Adams as "Nick."  Completely my error; Nick Adams was a film and TV actor from the '50's and early '60's (remember Johnny Yuma, The Rebel?).  He was from my part of the country, and Michael's email address of "nmsca[...]" probably helped confuse things in my mind.  Purely user headspace error on my part.  Sorry.
jgarland@kean.ucs.mun.ca writes:  > >> Also, perihelions of Gehrels3 were: > >>  > >> April  1973     83 jupiter radii > >> August 1970     ~3 jupiter radii > >  > > Where 1 Jupiter radius = 71,000 km = 44,000 mi = 0.0005 AU.  So the > > 1970 figure seems unlikely to actually be anything but a perijove. > > Is that the case for the 1973 figure as well? > > --  > Sorry, _perijoves_...I'm not used to talking this language.  Hmmmm....  The prefix "peri-" is Greek, not Latin, so it's usually used with the Greek form of the name of the body being orbited.  (That's why it's "perihelion" rather than "perisol", "perigee" rather than "periterr", and "pericynthion" rather than "perilune".)  So for Jupiter I'd expect it to be something like "perizeon".)   :^)
In article <1r8esd$lrh@agate.berkeley.edu> isaackuo@skippy.berkeley.edu wrote: > Are breathable liquids possible? >  > I remember seeing an old Nova or The Nature of Things where this idea was > touched upon (it might have been some other TV show).  If nothing else, I know > such liquids ARE possible because... >  > They showed a large glass full of this liquid, and put a white mouse (rat?) in > it.  Since the liquid was not dense, the mouse would float, so it was held down > by tongs clutching its tail.  The thing struggled quite a bit, but it was > certainly held down long enough so that it was breathing the liquid.  It never > did slow down in its frantic attempts to swim to the top. >  > Now, this may not have been the most humane of demonstrations, but it certainly > shows breathable liquids can be made. > --  > *Isaac Kuo (isaackuo@math.berkeley.edu)	*       ___ > *					* _____/_o_\_____ > *	Twinkle, twinkle, little .sig,	*(==(/_______\)==) > *	Keep it less than 5 lines big.	* \==\/     \/==/  This was on "That's Incredible" several years ago.  The volume of liquid the rat had to breath was considerably smaller than what a human would have to breath, so maybe it is possible for a rat but not a human.
Reply address: mark.prado@permanet.org  If anyone knows anyone else who would like to get sci.space, but doesn't have an Internet feed (or has a cryptic Internet feed), I would be willing to feed it to them.  I have a nice offline message reader/editor, an automated modem "mailer" program which will pick up mail bundles (quickly and easily), and an INSTALL.EXE to set them up painlessly.  No charge for the sci.space feed, though you have to dial Washington, D.C. This is NOT a BBS -- it's a store & forward system for mail bundles, with minimum connect times.  (I'm used to overseas calls.)  (This is not an offer for a free feed for any other particular newsgroups.)  Speeds of up to 14400 (v32bis) are supported.  VIP's might be offered other free services, such as Internet address and other functionality.  I get my feed from UUNET and run a 4-line hub.  I've been hubbing for years -- I have an extremely reliable hub.  The software I provide runs under MS-DOS (and OS/2 and Windows as a DOS box).  Other, compatible software packages exist for the MacIntosh and Unix.  Any responses should be private and go to:   mark.prado@permanet.org  (By the way, to all, my apologies for the public traffic on my glib question.  I really didn't expect public replys.  But thanks to Bill Higgins for the interesting statistics and the lead.)
Actually, they are legal! I not familiar with the ad you are speaking of but knowing Popular Science it is probably on the fringe.  However, you may be speaking of "Public Missle, Inc.", which is a legitimate company that has been around for a while.  Due to advances in composite fuels, engines are now available for model rockets using similar composites to SRB fuel, roughly 3 times more  powerful than black powder motors.  They are even available in a reloadable form, i.e. aluminum casing, end casings, o-rings (!).  The engines range from D all the way to M in common manufacture, N and O I've heard of used at special occasions.  To be a model rocket, however, the rocket can't contain any metal  structural parts, amongst other requirements.  I've never heard of a model rocket doing 50,000.  I have heard of > 20,000 foot flights. These require FAA waivers (of course!).  There are a few large national launches (LDRS, FireBALLS), at which you can see many > K sized engine flights.  Actually, using a > G engine constitutes the area of "High Power Rocketry", which is seperate from normal model rocketry.  Purchase of engines like I have been describing require membership in the National Association of Rocketry, the Tripoli Rocketry Assoc., or you have to be part of an educational institute or company involved in rocketry.  Amatuer rocketry is another area.  I'm not really familiar with this, but it is an area where metal parts are allowed, along with liquid fuels and what not.  I don't know what kind of regulations are involved, but I'm sure they are numerous.
Yes, the Phobos mission did return some useful data including images of Phobos itself. The best I've seen had a surface resolution of about 40 meters. By the way, the new book entitled "Mars" (Kieffer et al, 1992, University of Arizona Press) has a great chapter on spacecraft exploration of the planet. The chapter is co-authored by V.I. Moroz of the Space Research Institute in Moscow, and includes details never before published in the West. Don't know of any ftp sites with images though.
In article <1pfj8k$6ab@access.digex.com> prb@access.digex.com (Pat) writes: >In article <1993Mar31.161814.11683@mksol.dseg.ti.com> mccall@mksol.dseg.ti.com (fred j mccall 575-3539) writes:  >>It isn't feasible for Japan to try to stockpile the amount of oil they >>would need to run their industries if they did no use nuclear power.  >Of course,  Given they export 50 % of the GNP,  What do they do.  Well they don't export anywhere near 50% of their GNP. Mexico's perhaps but not their own. They actually export around the 9-10% mark. Similar to most developed countries actually. Australia exports a larger share of GNP as does the United States (14% I think off hand. Always likely to be out by a factor of 12 or more though) This would be immediately obvious if you thought about it.  >Anything serious enough to disrupt the sea lanes for oil will >also hose their export routes.  It is their import routes that count. They can do without exports but they couldn't live without imports for any longer than six months if that.  >Given they import everything,  oil is just one more critical commodity.  Too true! But one that is unstable and hence a source of serious worry.  Joseph Askew
In article <C5t05K.DB6@research.canon.oz.au> enzo@research.canon.oz.au (Enzo Liguori) writes: >From the article "What's New" Apr-16-93 in sci.physics.research: > >........ >WHAT'S NEW (in my opinion), Friday, 16 April 1993  Washington, DC > >1. SPACE BILLBOARDS! IS THIS ONE THE "SPINOFFS" WE WERE PROMISED? >In 1950, science fiction writer Robert Heinlein published "The >Man Who Sold the Moon," which involved a dispute over the sale of >rights to the Moon for use as billboard. NASA has taken the firsteps toward this > hideous vision of the future.  Observers were >startled this spring when a NASA launch vehicle arrived at the >pad with "SCHWARZENEGGER" painted in huge block letters on the >side of the booster rockets.   Things could be worse. A lot worse! In the mid-eighties the teen/adult sci-fi comic 2000AD (Fleetway) produced a short story featuring the award winning character "Judge Dredd". The story focussed on an advertising agency of the future who use high powered multi-coloured lasers/search lights pointed at the moon to paint images on the moon. Needless to say, this use hacked off a load of lovers, romantics and werewolfs/crazies. The ad guys got chopped, the service discontinued. A cautionary tale indeed!  Marvin Batty.
If by chance you answered my request for NEO Asteroids in the last two days please send them to me directly. I by mistake deleted instead of read all the space-request messages .  Thanks and sorry.  Harry G. Osoff Science & Technology Editor Access News Network
David Fuzzy Wells (wdwells@nyx.cs.du.edu) wrote:  : I love the idea of an inflatable 1-mile long sign.... It will be a : really neat thing to see it explode when a bolt  (or even better, a : Westford Needle!) comes crashing into it at 10 clicks a sec.    : <BOOM!>  Whooooooooshhhhhh......  <sputter, sputter>  : <okay, PRETEND it would make a sound!>                  ^^^^^^^^^^^^^^^^^^^^^  Just a thought... (let's pretend it IS INFLATED and PRESSURIZED) wouldn't there be a large static electricity build up around the puncture? If the metalization is behind a clear sandwich (ie. insulated) then the  deflating balloon would generate electrical interference - "noise"  By the way, any serious high velocity impact would simply cut a "Bugs Bunny" hole through the wall, highly unlikely to "BOOM", and the fabric would almost certainly be ripstop.
In article <1quule$5re@access.digex.net>, prb@access.digex.com (Pat) writes: |>  |> AW&ST  had a brief blurb on a Manned Lunar Exploration confernce |> May 7th  at Crystal City Virginia, under the auspices of AIAA. |>  |> Does anyone know more about this?  How much, to attend???? |>  |> Anyone want to go? |>  |> pat  Here are some selected excerpts of the invitation/registration form they sent me. Retyped without permission, all typo's are mine.  --------------------------------------------------------------------- Low-Cost Lunar Access: A one-day conference to explore the means and  benefits of a rejuvenated human lunar program.  Friday, May 7, 1993 Hyatt Regency - Crystal City Hotel Arlington, VA  ABOUT THE CONFERENCE The Low-Cost Lunar Access conference will be a forum for the exchange of ideas on how to initiate and structure an affordable human lunar program. Inherent in such low-cost programs is the principle that they be  implemented rapidly and meet their objectives within a short time frame.  [more deleted]  CONFERENCE PROGRAM (Preliminary)  In the Washington Room:    9:00 - 9:10 a.m.     Opening Remarks     Dr. Alan M. Lovelace    9:10 - 9:30 a.m.     Keynote Address     Mr. Brian Dailey    9:30 - 10:00 a.m.    U.S. Policy Outlook     John Pike, American Federation of Scientists    A discussion of the prospects for the introduction of a new low-cost   lunar initiative in view of the uncertain direction the space   program is taking.    10:00 - 12:00 noon   Morning Plenary Sessions    Presentations on architectures, systems, and operational concepts.   Emphasis will be on mission approaches that produce significant   advancements beyond Apollo yet are judged to be affordable in the   present era of severely constrained budgets   In the Potomac Room    12:00 - 1:30 p.m.    Lunch     Guest Speaker: Mr. John W. Young,     NASA Special Assistant and former astronaut  In the Washington Room    1:30 - 2:00 p.m.     International Policy Outlook     Ian Pryke (invited)     ESA, Washington Office    The prevailing situation with respect to international space    commitments, with insights into preconditions for European    entry into new agreements, as would be required for a cooperative   lunar program.    2:00 - 3:30 p.m.     Afternoon Plenary Sessions    Presentations on scientific objectives, benefits, and applications.   Emphasis will be placed on the scientific and technological value   of a lunar program and its timeliness.   ---------------------------------------------------------------------  There is a registration form and the fee is US$75.00. The mail address is        American Institute of Aeronautics and Astronautics      Dept. No. 0018      Washington, DC 20073-0018  and the FAX No. is:        (202) 646-7508  or it says you can register on-site during the AIAA annual meeting  and on Friday morning, May 7, from 7:30-10:30   Sounds interesting. Too bad I can't go.
Forwarded from Neal Ausman, Galileo Mission Director                                   GALILEO                      MISSION DIRECTOR STATUS REPORT                                POST-LAUNCH                            April 16 - 22, 1993   SPACECRAFT  1.  On April 19, cruise science Memory Readouts (MROs) were performed for the Extreme Ultraviolet Spectrometer (EUV), Dust Detector (DDS), and Magnetometer (MAG) instruments.  Preliminary analysis indicates the data was received properly.  2.  On April 19, a Command Detector Unit Signal-to-Noise Ratio (CDUSNR) test and a Radio Frequency Subsystem Automatic Gain Control (RFSAGC) test were performed using the LGA-1 (Low Gain Antenna #1) over DSS-63 (Madrid 70 meter antenna) and DSS-61 (Madrid 34 meter antenna), respectively.  Data analysis is in process.  These tests are periodically performed to provide detailed information relative to the telecom command hardware integrity.  3.  On April 19, a NO-OP command was sent to reset the command loss timer to 264 hours, its planned value during this mission phase.  4.  On April 21, the first of two suppressed carrier/DSN (Deep Space Network) advanced receiver characterization tests was performed over DSS-14 (Goldstone 70 meter antenna).  The spacecraft modulation index was varied from 43 degrees to 90 degrees for a range of ground receiver bandwidth settings.  5.  The AC bus imbalance measurement has not exhibited significant change (greater than 25 DN) throughout this period but the DC bus imbalance measurement has.  The AC measurement reads 20 DN (4.5 volts).  The DC measurement has ranged from 43 DN (4.6 volts) to 138 DN (16.2 volts) and currently reads 138 DN (16.2 volts).  These measurements are consistent with the model developed by the AC/DC special anomaly team.  6.  The Spacecraft status as of April 22, 1993, is as follows:         a)  System Power Margin -  68 watts        b)  Spin Configuration - Dual-Spin        c)  Spin Rate/Sensor - 3.15rpm/Star Scanner        d)  Spacecraft Attitude is approximately 21 degrees            off-sun (lagging) and 5 degrees off-earth (leading)        e)  Downlink telemetry rate/antenna- 40bps(coded)/LGA-1        f)  General Thermal Control - all temperatures within            acceptable range        g)  RPM Tank Pressures - all within acceptable range        h)  Orbiter Science- Instruments powered on are the PWS,            EUV, UVS, EPD, MAG, HIC, and DDS        i)  Probe/RRH - powered off, temperatures within            acceptable range        j)  CMD Loss Timer Setting - 264 hours            Time To Initiation - 184 hours   TRAJECTORY       As of noon Thursday, April 22, 1993, the Galileo Spacecraft trajectory status was as follows:  	Distance from Earth         169,747,800 km (1.14 AU) 	Distance from Sun           286,967,900 km (1.92 AU) 	Heliocentric Speed          91,200 km per hour 	Distance from Jupiter       532,735,900 km 	Round Trip Light Time       18 minutes, 58 seconds   SPECIAL TOPIC
hausner@qucis.queensu.ca (Alejo Hausner) Pontificated:  > >Sorry to split hairs, but I just read in "The making of the atomic >bomb"(*) that teflon was developed during world war 2.  A sealant was >needed for the tubing in which uranium hexafluoride passed as it was >gradually enriched by difussion.  UF6 is very corrosive, and some very >inert yet flexible material was needed for the seals. > To split a split hair, I believe that teflon (-CF4- monomer) was "discovered" by accident when someone I don't remember found what he thought was a liquid (or gas?) had turned to a solid...  It just happend to fit the bill for the above use...  I'm crossposting to sci.materials so perhaps someone in the know might elaborate...
In article <C6B2pA.My4@usenet.ucs.indiana.edu> turner@bigbang.astro.indiana.edu (George Wm Turner) writes: > > >an image of the moon has been caught in a weather satellite images of the earth. >it appears in both the 0430-1500UT ir and visual images of the earth. >the GIF images can be down loaded from vmd.cso.uiuc.edu and are named >CI043015.GIF and CV043015.GIF for the IR and visual images respectively. > >pretty cool pictures;  in the ir it's saturated but in the visual image >details on the moon are viewable.