Date: Sat, 24 Oct 92 05:15:24 From: Space Digest maintainer Reply-To: Space-request@isu.isunet.edu Subject: Space Digest V15 #339 To: Space Digest Readers Precedence: bulk Space Digest Sat, 24 Oct 92 Volume 15 : Issue 339 Today's Topics: Dan Quayle on Mars (2 msgs) DCX Status? (2 msgs) Dyson's Spheres Federal Spending (was: Space for white people only?) Galileo Update - 10/23/92 Ground facilities for DC-* (was Re: DCX Status?) (2 msgs) HRMS/SETI Rumor? Magellan Update - 10/23/92 Mars Observer Update - 10/23/92 Perot & Freedom Scott Joplin classic offensive to Canadians? Space event space resources Specs needed for Galileo probe Sundrive Welcome to the Space Digest!! Please send your messages to "space@isu.isunet.edu", and (un)subscription requests of the form "Subscribe Space " to one of these addresses: listserv@uga (BITNET), rice::boyle (SPAN/NSInet), utadnx::utspan::rice::boyle (THENET), or space-REQUEST@isu.isunet.edu (Internet). ---------------------------------------------------------------------- Date: 22 Oct 92 20:29:40 GMT From: Bruce Watson Subject: Dan Quayle on Mars Newsgroups: sci.space In article <1992Oct22.164507.28856@eos.arc.nasa.gov| brody@eos.arc.nasa.gov (Adam R. Brody ) writes: |lake@maple.gvsu.edu (Craig Lake) writes: | | || Does anyone know the famous Dan Quayle life on Mars quote from a ||couple of years ago, or at least where I could look this up? || Thanks || Craig Lake | |Something to the effect of "Since there are canals on Mars, there |was water. If there is water, there is oxygen, and if there is |oxygen, we can breathe!" "Mars is essentially in the same orbit. Mars is somewhat the same distance from the Sun, which is very important. We have seen pictures where there are canals, we believe, and water. If there is water, there is oxygen. If oxygen, that means we can breathe." -- J. Danforth Quayle, January 1990 -- Bruce Watson (wats@scicom) Tumbra, Zorkovick; Sparkula zoom krackadomando. ------------------------------ Date: 23 Oct 92 08:46:50 From: David.Anderman@ofa123.fidonet.org Subject: Dan Quayle on Mars Newsgroups: sci.space * QUAYLE QUOTE * ================ "Mars is essentially in the same orbit. Mars is somewhat the same distance from the Sun, which is very important. We have seen pictures where there are canals, we believe, and water. If there is water, there is oxygen. If oxygen, that means we can breathe." J. Danforth Quayle, January 1990 --- Maximus 2.00 ------------------------------ Date: Fri, 23 Oct 1992 15:31:40 GMT From: Bruce Dunn Subject: DCX Status? Newsgroups: sci.space In regard to fuel for the DC series of craft: > Henry Spencer writes: > > Slush hydrogen helps hydrogen's density problems some, at the cost of > adding a large assortment of technical hassles (for example, it's not at > all simple to build a fuel gauge for a slush-hydrogen tank, because the > depth does not tell the whole story). I'm not really convinced that it > will ever be worth the trouble. > > But then, I'll admit to some bias, because I belong to the faction that > says that liquid hydrogen isn't really worth the trouble either... Hmm.... I am told by Allen that the DCY using hydrogen and oxygen is expected to have a liftoff mass of approximately 500 metric tons, and a mass fraction (fraction of total mass available for ascent propellant) of 0.91. The vehicle thus consists of 455 tons of hydrogen and oxygen, and 45 tons of structural mass, propellant residuals, and landing propellant. My spreadsheet says that if you assume an Isp of 430 averaged over the ascent (perhaps something like 375 at sea level and 450 in vacuum), the payload for such a vehicle to low earth orbit will be about 11 tons. What would happen if you decided to use subcooled propane (density about 0.8 at liquid oxygen temperature) and LOX as propellants? In the DCY design, the tank volume assuming an oxidizer to fuel mixture ratio of 5 is about 1403 cubic meters (propellant bulk density 0.324). Filling the same tank volume with propane and LOX at a mixture ratio of 2.3 gives a loading of 1416 tons of propellant (propellant bulk density of 1.009). Assuming an Isp of 330 for propane/LOX, and assuming the same non-propellant mass (45 tons), this vehicle will lift a payload of approximately 40 tons. The propane/LOX vehicle will of course have a somewhat heavier dry mass. The engines must have approximately 3 times the thrust for takeoff, and the tanks, although they won't be any larger, must be designed to hold 3 times the mass of propellant under acceleration. Interestingly however, the turbo-pumps for the engines will be no bigger than on the LOX/hydrogen vehicle, as the same volume of propellant must be pumped over the same time period. Provided that the extra structural mass entailed in the LOX/propane vehicle doesn't exceed 40 tons minus 11 tons, the LOX/propane vehicle is competitive with the LOX/hydrogen vehicle. Some small structural advantages are actually gained by using propane at LOX temperatures as fuel. Fuel and oxidizer tanks don't need to be insulated from each other. All propellants other than propane and hydrogen must be thermally insulated from the LOX tank to keep them from freezing - even methane freezes at LOX temperature. Hydrogen presents the opposite problem - insulation is needed to keep the LOX from freezing. -- Bruce Dunn Vancouver, Canada Bruce_Dunn@mindlink.bc.ca ------------------------------ Date: Fri, 23 Oct 1992 15:27:32 GMT From: Mary Shafer Subject: DCX Status? Newsgroups: sci.space On Fri, 23 Oct 1992 05:45:46 GMT, henry@zoo.toronto.edu (Henry Spencer) said: HS> In article shafer@rigel.dfrf.nasa.gov (Mary Shafer) writes: >...DC-Y is unlikely to ever happen, having been cancelled... HS> It's hard to say it was "cancelled" when it was never really begun in the HS> first place... DC-Y's current status is essentially the same one it has HS> had for some time: nobody has yet provided significant funding for it, HS> and the backers of DC-X (SDIO) are unlikely to do so. There may be enough HS> support for DC-Y to find it a home elsewhere, if DC-X works. You're quite correct. It would have been more accurate had I said something like "SDIO having abandoned it at this time". It's my understanding that SDIO has reprogrammed all the funding for DC-Y development into DC-X support. -- Mary Shafer DoD #0362 KotFR NASA Dryden Flight Research Facility, Edwards, CA shafer@rigel.dfrf.nasa.gov Of course I don't speak for NASA "There's no kill like a guns kill." LCDR "Hoser" Satrapa, gunnery instructor "A kill is a kill." Anonymous ------------------------------ Date: 23 Oct 92 18:24:23 GMT From: Brandon C Long Subject: Dyson's Spheres Newsgroups: sci.space gjschmid@lagrange.uwaterloo.ca (Greg Schmidt) writes: >Actually, I think we probably have the technology required to build it right >now. The problems are: >1) we don't have nearly enough raw materials (even if we broke up all the > planets, moons, and asteroids in the entire solar system) >2) we don't have the monetary resources to pull it off >3) why bother when Earth is large enough right now, and Venus and Mars will > provide more than enough space for many years to come >4) we don't have the technology required to circumvent the above problem of > dispersing the unused energy - this could be solved by building a ring > instead of a sphere (as in Niven's Ringworld) We have the necessary technology to create a sphere around the sun and also create gravity on the inside surface of that sphere? There must of been a few advances in gravimetrics since I was last in school. ------------------------------ Date: Fri, 23 Oct 92 15:49:19 GMT From: Doug Mohney Subject: Federal Spending (was: Space for white people only?) Newsgroups: sci.space In article , "UTADNX::UTDSSA::GREER"@utspan.span.nasa.gov writes: Kicks off a bunch of numbers which makes me wanna put on a Libertarian Cap... >NASA's budget for 1992 is more like $16e9 out of a total budget of >$1500e9, or $1.5e12(!). The NASA budget works out to about $160/year >for each household in the US, but your contribution will vary with >your tax rate. This is about $13/month, enough for two people to >dine out or go to a movie once a month, or rent one or two videos >every weekend. > >In fact, Americans spend about $375/month per household on all forms of >entertainment, including movies, sports, TV, magazines, books, etc. > >The total of all government spending, including federal, state and local >governments in the US comes to about $1700/month per household. > >The median income in the US is about $3000/month per household. Which adds up to $13/month for NASA and another xx/month for program AAA, another yy/month for program BBB....etc...until you get up til real money Lies, damned, statistics. Oh yah, and computer modeling, but that's another story. >Most people don't know beans about numbers, especially very large ones. >Putting these kinds of numbers on a monthly payment per household basis >and relating them to spending on other things helps to bring these numbers >into perspective. Also helps to massage the fact you're clipping money out of somebody's pocket. Regardless. > Relating spending to entertainment is especially >pertinent, since the anti-science-spending argument is usually based on >the notion that such spending is frivolous and expendable. Nope. It means you're trying to justify pulling money in the form of taxes out of someone's pocket. If a consumer decides to spend money on entertainment, that's his/her decision. > It is much >more difficult for someone to continue this line once they realize how >much they spend on true frivolity. Not so frivilious when you start adding up everyone else's "small, little" programs in the Big Picture. Me, I'd rather give NASA $80/year, and have the other $80 to spend on more entertainment....but, of course, Big Daddy Goverment knows best. Play in the intelluctual sandbox of Usenet -- > SYSMGR@CADLAB.ENG.UMD.EDU < -- ------------------------------ Date: Sat, 24 Oct 1992 00:14:16 GMT From: Ron Baalke Subject: Galileo Update - 10/23/92 Newsgroups: sci.space,sci.astro,alt.sci.planetary Forwarded from Neal Ausman, Galileo Mission Director GALILEO MISSION DIRECTOR STATUS REPORT POST-LAUNCH October 16 - 22, 1992 SPACECRAFT 1. On October 16, as part of the Dual Drive Actuator (DDA) No. 4 pulse activities, real-time commands were sent to open the Star Scanner (SS) shutter and to reacquire celestial reference. Additionally, commands were sent to place the spacecraft in scan Type 6 for the collection of precise wobble data. The wobble data confirmed earlier sun gate and doppler indications that there was no change in the HGA (High Gain Antenna) rib configuration (no ribs released). Also, real-time commands were sent to reconfigure the System Fault Protection (SFP) AACS-INIT (Attitude and Articulation Control Subsystem) pointing slot from the sun to the Earth after the DDA pulse No. 4 activities. This change will allow the spacecraft to lock up on the star set in the Earth slot if an AACS Power on Reset (POR) occurs and maintain its current attitude. Additionally, commands were sent to turn off the Radioisotope Thermoelectric Generator (RTG) boom heaters and disable their respective temperature control monitors in order to maintain an appropriate Retro-Propulsion Module (RPM) power profile. Also the System Fault Protection (SFP) parameters for RPM thermal safing were modified to reflect this change to the spacecraft configuration. 2. During the period of October 16 through October 18, a navigation cycle was performed. This navigation cycle provided near-continuous acquisition of two-way doppler and ranging data during four consecutive passes of the spacecraft over DSS-63 (Madrid 70 meter antenna), DSS-14 (Goldstone 70 meter antenna), DSS-43 (Canberra 70 meter antenna), and then back to DSS-63. This data will help improve orbit determination in support of the TCM-16 (Trajectory Correction Maneuver #16) scheduled for November 13. 3. On October 19, a NO-OP command was sent to reset the command loss timer to 264 hours, its planned value for this mission phase. 4. On October 22, real-time commands were sent to perform Extreme Ultraviolet Spectrometer (EUV) Memory Readouts (MROs). Preliminary analysis indicates the data was received properly. 5. The AC/DC bus imbalance measurements exhibited some change. The AC measurement has ranged from 16DN to 18DN and now reads 16 DN (3.7 volts). The DC measurement has ranged from 129 DN (15.1 volts) to 155 DN (18.3 volts) and now reads 136 DN (16.0 volts). These measurement variations are consistent with the model developed by the AC/DC special anomaly team. 6. The Spacecraft status as of October 22, 1992, is as follows: a) System Power Margin - 76 watts b) Spin Configuration - Dual-Spin c) Spin Rate/Sensor - 3.15 rpm/Star Scanner d) Spacecraft Attitude is approximately 2 degree off-sun (lagging) and 21 degrees off-earth (lagging) e) Downlink telemetry rate/antenna-1200 bps (coded)/LGA-1 f) General Thermal Control - all temperatures within acceptable range g) RPM Tank Pressures - all within acceptable range h) Orbiter Science- UVS, EUV, DDS, MAG, EPD, and HIC are powered on i) Probe/RRH - powered off, temperatures within acceptable range j) CMD Loss Timer Setting - 264 hours Time To Initiation - 262 hours UPLINK GENERATION/COMMAND REVIEW AND APPROVAL: 1. The EE-11 (Earth-Earth 11) Final Profile Design package was approved by the Project on October 22, 1992. This sequence covers spacecraft activities from December 7 to December 28, 1992 including Earth 2 closest approach on December 8. GDS (Ground Data Systems): 1. A Probe Mission Readiness Test/Ground Data System Test was conducted Sunday, October 18 with the DSN (Deep Space Network) SPC 60 (Signal Processing Center in Madrid, Spain). Probe data were routed through the DSN station processors to the Galileo MTS (MCCC Telemetry Subsystem) where it was processed, displayed and routed to the Probe Flight Operations Equipment (PFOE) in real-time. A compressed Probe tape was created for non-realtime processing on the PFOE. Post test analysis of both the real-time data and the compressed Probe tape is continuing. 2. The October System Engineers Monthly Report (SEMR) review was conducted Thursday, October 22. A review of current Project and Institutional (MOSO & DSN) system status was conducted. Pre-Earth 2 delivery schedules, Earth 2 readiness, past months accomplishments and potential problem areas were discussed. No significant schedule changes or problems were reported. TRAJECTORY As of noon Thursday, October 22, 1992, the Galileo Spacecraft trajectory status was as follows: Distance from Earth 26,135,200 miles (.28 AU) Distance from Sun 116,851,200 miles (1.26 AU) Heliocentric Speed 65,300 miles per hour Distance from Jupiter 604,042,600 miles Round Trip Light Time 4 minutes, 38 seconds SPECIAL TOPIC 1. As of October 22, 1992, a total of 8357 real-time commands have been transmitted to Galileo since Launch. Of these, 3386 were initiated in the sequence design process and 4971 initiated in the real-time command process. In the past week, 33 real time commands were transmitted: 19 were initiated in the sequence design process and 14 initiated in the real time command process. In addition, 5911 mini-sequence commands have been transmitted since March 1991; 3753 were pre-planned and 2158 were not. In the past week, no mini-sequence commands were transmitted. Major command activities this week included commands to open the star scanner shutter and reacquire celestial reference, select scan Type 6, update system fault protection parameters, turn off RTG boom heaters and disable their temperature control monitors, reset the command loss timer, and perform cruise science memory readouts. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@kelvin.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |__ M/S 525-3684 Telos | If God had wanted us to /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | have elections, he would |_____|/ |_|/ |_____|/ | have given us candidates. ------------------------------ Date: 23 Oct 92 13:06:40 GMT From: Dave Jones Subject: Ground facilities for DC-* (was Re: DCX Status?) Newsgroups: sci.space Bill Higgins-- Beam Jockey (higgins@fnalo.fnal.gov) wrote: > In article , henry@zoo.toronto.edu (Henry Spencer) writes: > > One thing that didn't end up being mentioned in my > > technical-aspects paper is that SSTO would *not* need to use government > > launch ranges, after initial testing. It needs no particularly elaborate > > ground facilities. > > Proximity to fancy clean rooms, etc. for preparing payloads? > > (I know, when the Revolution Comes, launch costs will be so low that > we can afford to slap together payloads in some undergraduate lab in > the University of Toronto's Zoology Building, and launch 'em from the > parking lot.) > This from a particle physicist. Last year I helped build a particle detector in a "clean room" that was just an area in a slightly delapidated outbuilding (yes, at the back of a parking lot) curtained off with heavy plastic sheet and supplied with copious amounts of filtered, conditioned air. I forget what the official cleanliness index was but it was good enough for building detectors. I suspect space payloads could be put together under similar conditions. -- ||)) There is no truth to the rumor that:)))))))))))))))))))))))))))))))))))| ||)) Lotus are suing Apple for copying the look and feel of their lawsuits )| ||))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))| ||Dave Jones (dj@ekcolor.ssd.kodak.com) | Eastman Kodak Co. Rochester, NY | ------------------------------ Date: Fri, 23 Oct 1992 19:45:47 GMT From: Donald Lindsay Subject: Ground facilities for DC-* (was Re: DCX Status?) Newsgroups: sci.space higgins@fnalo.fnal.gov (Bill Higgins-- Beam Jockey) writes: >Proximity to fancy clean rooms, etc. for preparing payloads? > >(I know, when the Revolution Comes, launch costs will be so low that >we can afford to slap together payloads in some undergraduate lab in >the University of Toronto's Zoology Building, and launch 'em from the >parking lot.) I believe that Oscar (?), the original ham-radio satellite, contained some Radio Shack parts, and was at least partly built in somebody's basement. That would have been 15-20 years ago. Haven't there been Russian satellites that maintained an internal atmosphere, at some weight penalty, so that the onboard equipment would be more reliable/ require less design effort ? -- Don D.C.Lindsay Carnegie Mellon Computer Science ------------------------------ Date: Fri, 23 Oct 92 15:38:53 GMT From: Doug Mohney Subject: HRMS/SETI Rumor? Newsgroups: sci.space In article , henry@zoo.toronto.edu (Henry Spencer) writes: >Even if it were true -- and apparently this time it's not -- false alarms >are common in SETI efforts. If a signal can't immediately be identified >with a known source, I believe the standard procedure is to ask observers >at another site to confirm it. Almost invariably they see no signs of it, >which means it is virtually certain to be interference (probably man-made) >local to the first observing site. This all reminds me of the Pepsi commercial where the two workers are sitting on top of/around the radio telescope... Play in the intelluctual sandbox of Usenet -- > SYSMGR@CADLAB.ENG.UMD.EDU < -- ------------------------------ Date: 24 Oct 92 02:39:21 GMT From: Ron Baalke Subject: Magellan Update - 10/23/92 Newsgroups: sci.space,sci.astro,alt.sci.planetary Forwarded from the Magellan Project MAGELLAN STATUS REPORT October 23, 1992 1. Magellan continues to operate normally, performing a starcal (star calibration) and desat (desaturation of the reaction wheels) on each orbit and transmitting a carrier plus 40 bps X-band signal. 2. The craft has completed 5930 orbits of Venus. 295 orbits have been completed in Cycle 4. Since the science requirement is to collect gravity data on at least one out of every four orbits, we have about 75 orbits of gravity. This represents about 17.6% of the coverage we expect to get during Cycle 4 (or 63 degrees of longitude out of the 360 degrees). 3. The G2297 command sequence was uplinked to the spacecraft late yesterday. In addition to the normal operations, this sequence includes a calibration of the Attitude Reference Unit and scale factor check of the gyros to be performed this weekend. 4. Magellan is now passing through the shadow of Venus during the apoapsis portion of each orbit. Since it travels slower while more distant from Venus, it spends nearly an hour of each orbit in the shadow. 5. Dr. Steve Saunders, Jerry Clark, Phil Allin, Greg Michaels, Mona Jasnow, and Neil Nickle are among the Magellan team members attending the 1992 Geological Society of America Convention in Cincinnati from October 25 through 28. The theme of the meeting is "From Columbus to Magellan," and an exhibit of the Magellan results at Venus will be set up and staffed by the team. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@kelvin.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |__ M/S 525-3684 Telos | If God had wanted us to /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | have elections, he would |_____|/ |_|/ |_____|/ | have given us candidates. ------------------------------ Date: 24 Oct 92 02:46:30 GMT From: Ron Baalke Subject: Mars Observer Update - 10/23/92 Newsgroups: sci.space,sci.astro,alt.sci.planetary Forwarded from the Mars Observer Project MARS OBSERVER STATUS REPORT October 23, 1992 11:00 AM PDT Launch +28 Days Flight sequence C3 execution continues. The C3 A load, which began execution at 9:00 AM, PDT on October 13, will complete at 1:00 PM PDT, Saturday, October 24. C3 A performed Payload Data System, Magnetometer/Electron Reflectometer, Gamma Ray Spectrometer, Mars Observer Camera, Mars Balloon Relay, Thermal Emission Spectrometer, and Mars Observer Laser Altimeter instrument checkouts to determine payload health after launch. C3 A also opened Pressure Modulator Infrared Radiometer aperture and radiator cover doors, and performed a Radio Science Ultra Stable Oscillator test. The time allocated to C3 load B will not be utilized. C3 B provided a contingency window to be used in the event TCM-1 (Trajectory Correction Manuever #1) was not performed as planned. The time allocated was 1:00 PM PDT, October 24 through 1:00 PM PST, October 26. The flight sequence C3 C load will be uplinked to the spacecraft Sunday, October 25. C3 C execution is at 1:00 PM, PST, October 26 and clocks out for the remainder of the C3 timeline (November 17). C3 C lasts 21 days and 20 hours and includes Mars Observer Camera Bakeout, Radio Science Ultra Stable Oscillator testing, and Gamma Ray Spectrometer inner cruise calibrations. The Spacecraft Team reports that all Mars Observer subsystems continue to perform well. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@kelvin.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |__ M/S 525-3684 Telos | If God had wanted us to /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | have elections, he would |_____|/ |_|/ |_____|/ | have given us candidates. ------------------------------ Date: 23 Oct 92 20:18:58 GMT From: Jr Childers Subject: Perot & Freedom Newsgroups: sci.space In article <1992Oct22.150219.20374@samba.oit.unc.edu> cecil@physics.unc.edu writes: >Someone asked recently about federal outlays, probably not in >this thread. These figures are from the Financial Management Service, >Treasury Dept., General Accounting Office: > >1992 US Budget Receipts & Outlays >Total receipts 1,073.6 (billions) >Total expenses 1,407.1 [list deleted] >This leaves 218.8 billion to divide among other activities. >Currently NASA gets about 14 billion (6%). As Ross points out ^^^^ Is this their number? NASA's Budget 14 billion ---------------- X 100% = --------------- X 100% = 1% != 6% Total Expenses 1,407 billion Now I know why we never ballance our budget. :-( John Childers UNCCharlotte john@opticslab1.uncc.edu ------------------------------ Date: 23 Oct 92 12:37:27 GMT From: John Roberts Subject: Scott Joplin classic offensive to Canadians? Newsgroups: sci.space -From: henry@zoo.toronto.edu (Henry Spencer) -Subject: Re: TheSouth rose (was Re: Weather satellites & preventing property damage) -Date: 21 Oct 92 21:07:52 GMT -In article <1992Oct21.201944.4526@eng.umd.edu> sysmgr@king.eng.umd.edu writes: ->Obviously, they didn't have THAT much of an impact. If they did, the Marines ->would have gotten the Maple leaf right side up... -No, no, Doug, you misunderstand. An upside-down flag is a distress signal... -and rumor hath it that some of you rebel types (I speak, of course, of your -rebellion against legitimate royal authority, not of any internal tiffs -you've had more recently) are getting a wee bit distressed about the -possibility that your soi-disant "World Series" might actually be won by -a foreign team... :-) And now the Canadians are *deliberately* flying the US flag upside down. Before this escalates to Canadian-flag toilet paper, I suggest that the Canadian astronaut on the Shuttle pose for the TV camera *upside down* relative to the camera, holding a Canadian flag, and point out that in space, rightside-up and upside-down have no meaning. The video downlink on NASA Select has been showing the robot arm with the word "Canada" plainly visible and rightside up (wrt the camera) for several minutes now. Coincidence? :-) Come to think of it, if I go to Canada right now and look at the maple trees, which way are the leaves going to be pointed? Maybe the Canadian flag should have the leaf pointed up in the summer, pointed down in the fall, completely missing during the winter, and very small in the early spring. :-) John Roberts roberts@cmr.ncsl.nist.gov ------------------------------ Date: 23 Oct 92 08:47:48 From: David.Anderman@ofa123.fidonet.org Subject: Space event Newsgroups: sci.space -Campaign for Space- Rally for Congressman George Brown On Saturday, October 31, at 10 am, space activists will stage a rally in support of the re-election campaign of Congressman George Brown (D-Colton). The rally will be held at 495 W. Valley Pkwy in Colton in San Bernardino county. Congressman George Brown is the current Chair of the House Committee on Space and Science, and one of the nation's most powerful voices in support of the space program. He is a life-long supporter of space development, and was an early and important co-sponsor of the Launch Services Purchase Act. During the campaign, he has responded to a questionnaire submitted by NSS members, with detailed answers on his views on the future of the space program. His opponent in the race did not respond to the questionnaire. The questionnaire and Congressman's Brown's responses are available upon request. All space activists in southern California are asked to show their support for space development by attending the October 31 rally, which is free of charge, and open to the general public. For more information, please contact David Anderman at 714/524-1674. --- Maximus 2.00 ------------------------------ Date: 23 Oct 92 18:02:10 GMT From: Richard Schroeppel Subject: space resources Newsgroups: sci.space Bill Higgins writes ... > Use your imagination more. Conditions on Mars may have led to differentiation in radically different ways than on Earth. Or maybe not. Probably we won't know enough about "Martian economic geology" to say much for a long time to come. In our lifetimes the major Martian resources will be easy-to-grab stuff like the atmosphere, icecap, permafrost, and compounds abundant in the soil. Your reasoning also makes an excellent case for Phobos. Some local estimates here are a 100+ meter regolith depth. (They may have said "a few hundred meters"; my memory is a bit hazy.) Phobos has an advantage, in that it recaptures much/most? of the impact debris that gets splattered off. Your magnetic iron collector might be a real winner. Rich Schroeppel rcs@cs.arizona.edu ------------------------------ Date: Fri, 23 Oct 1992 19:14:35 GMT From: Josh 'K' Hopkins Subject: Specs needed for Galileo probe Newsgroups: sci.space I'm trying to find some detailed info on the Galileo atmospheric probe, like masses, dimensions, mission profile, etc. I have a great description of the instruments and what they're for, but no info on what holds them together. Can anybody point me towards a good source? -- Josh Hopkins jbh55289@uxa.cso.uiuc.edu The views expresed above do not necessarily reflect those of ISDS, UIUC, NSS, IBM FSC, NCSA, NMSU, AIAA or the American Association for the Advancement of Acronymphomaniacs ------------------------------ Date: 23 Oct 92 15:46:07 GMT From: "Edward V. Wright" Subject: Sundrive Newsgroups: sci.space In jim@netlink.cts.com (Jim Bowery) writes: >No. But reaction mass from the star should be used instead of photons. Ouch. I don't think you'd want to do such a thing with a star that had people living around it. (And if people weren't living around it, why bother moving it?) ------------------------------ End of Space Digest Volume 15 : Issue 339 ------------------------------