Date: Wed, 15 Jul 92 04:59:59 From: Space Digest maintainer Reply-To: Space-request@isu.isunet.edu Subject: Space Digest V15 #002 To: Space Digest Readers Precedence: bulk Space Digest Wed, 15 Jul 92 Volume 15 : Issue 002 Today's Topics: apollo 10 (2 msgs) Coding on Galileo CRC Handbook of Chemistry and Physics Giotto Update - 07/13/92 Hungry for Instant Comet Science (was Re: Giotto Update - 07/13/92) (2 msgs) Interplanetary communications relays Magellan Update - 07/14/92 N2 in nuclear thermal rocket / Hohmann to Venus Now, where at last ? (Re: apollo 10) Space Digest Returns! Space Transportation Infrastructure Costs (Was Re: Interstates) STS-47 SAREX fact sheet test Welcome to the Space Digest!! Please send your messages to "space@isu.isunet.edu" (on Internet). If you are on Bitnet, you must use a gateway (e.g., "space%isu.isunet.edu@CUNYVM"). Please do **NOT** send (un)subscription requests to that address! Instead, send the message "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: Tue, 14 Jul 92 17:19:33 GMT From: John Stevenson Subject: apollo 10 Newsgroups: sci.space In article <20682@suned1.Nswses.Navy.MIL> slb@slced1.nswses.navy.mil (Shari L Brooks) writes: > I do *not* understand. I have been under the impression since I was about 6 > years old, and upper division physics and graduate level astronautical > engineering have only severd to confirm this impression, that the reason > any object in orbit decayed was because of drag or some other, frictional/ > viscous loss of energy. Do you mean to say that solar wind is enough to > decay an object in selenocentric orbit? Or perhaps, dust? > > What could possibly cause an object in a stable (stable :== orbit radius > > lunar radius) orbit around the moon to decay? Of course, the gravitational field about the moon is conservative. What happens to the orbit is not a loss of energy but a change of shape. We often think of orbits about a single point mass. Such a scenario will maintain orbit shape. The "lumpiness" of the moon's gravitational field, however, could be thought of as a number of point masses, not all of which could occupy the focus of the orbital ellipse. As the satellite orbits the center of mass of all these points, it will pass closer to some of the off center points, "sucking" in the satellite and lowering the altitude at that point which might or will be the periapsis of the orbit. Of course, the apoapsis is raised to conserve the total energy. The orbit becomes more and more elliptical until impact with the surface. The current models of the moon's gravity suggest this lowering of the periapsis happens quite quickly (order of days for 100 km orbits). By the way, the large uncertainty in the modelling of the moon's gravitational field is due not only to a lack of missions but also due to the somewhat unique property of the farside of the moon. The farside of the moon is never visible from the earth, and the doppler acceleration measurements of satellites that are used to develop gravitational models cannot be made while the satellites are traversing the farside. This lack of visibility greatly increases the uncertainty of the modelling process. JPL's Lunar Observer was going to deploy a small subsatellite to relay the radio navigation signals of the main satellite while it traversed the farside for just this purpose. John Stevenson hangfore@spf.trw.com ------------------------------ Date: Wed, 15 Jul 92 00:11:32 GMT From: James Ashton Subject: apollo 10 Newsgroups: sci.space In article <20682@suned1.Nswses.Navy.MIL>, slb@slced1.nswses.navy.mil (Shari L Brooks) writes: > I do *not* understand. I have been under the impression since I was about 6 > years old, and upper division physics and graduate level astronautical > engineering have only severd to confirm this impression, that the reason > any object in orbit decayed was because of drag or some other, frictional/ > viscous loss of energy. Do you mean to say that solar wind is enough to > decay an object in selenocentric orbit? Or perhaps, dust? > > What could possibly cause an object in a stable (stable :== orbit radius > > lunar radius) orbit around the moon to decay? Well perhaps decay is not the most accurate term here. Your confusion is based on the assumption that the Moon can be modelled as a point mass at its centre of gravity. This is a valid assumption only if its mass is distributed in a certain way. It turns out that the Moon's mass is significantly lumpy which will cause objects orbiting it, particularly objects in low orbits, to have their orbits perturbed from the usual elliptical shape. Of course the solar wind and other perturbing bodies will have some effect also but I don't think they're significant in this case. Needless to say, only small perturbations are required before the orbit intersects the lunar surface whereat the object's orbit could be considered to commence very rapid decay. -- James Ashton (James.Ashton@syseng.anu.edu.au) Veni, vidi, emi in diem ------------------------------ Date: 14 Jul 92 23:43:23 GMT From: etssp@levels.unisa.edu.au Subject: Coding on Galileo Newsgroups: sci.space In article <1992Jul10.171747.5067@elroy.jpl.nasa.gov> baalke@kelvin.jpl.nasa.gov (Ron Baalke) writes: > stuff deleted > >3. On July 8, as part of the Warming/Cooling Turn No. 6A activities, >real-time commands were sent to switch from 10 bps coded telemetry to 40 bps ^^^^^^ ^^^^^^ >coded telemetry. This command was sent after the S-band TWTA (Traveling >Wave Tube Amplifier) was set to the high power mode via the stored sequence >(see Special Topic No. 2). > > stuff deleted What sort of coding is used in the 10 bit/s and 40 bit/s data rates? Is it the standard K = 7 rate 1/2 convolutional code? What sort of coding is going to be used to get 100 bit/s from Jupiter (is it the new K = 15 rate 1/4 convolutional code concatenated with the standard (255,223) Reed Solomon outer code?). -- Steven S. Pietrobon, Australian Space Centre for Signal Processing Signal Processing Research Institute, University of South Australia The Levels, SA 5095, Australia. steven@sal.levels.unisa.edu.au ------------------------------ Date: 15 Jul 92 01:39:41 GMT From: John Roberts Subject: CRC Handbook of Chemistry and Physics Newsgroups: sci.space -From: higgins@fnalb.fnal.gov (Bill Higgins-- Beam Jockey) -Subject: Re: N2 in nuclear thermal rocket / Hohmann to Venus -Date: 14 Jul 92 15:24:09 GMT -Once upon a time, in the rosy Sixties, it looked like *lots* of people -might want to know about interplanetary transfer trajectories. So -they put the tables in the Rubber Handbook. Later, in the Eighties, -they got disillusioned and took it out. :-( -Frank, older editions *do* have the table... There's considerable turnover from edition to edition - which is why you should *never* thow away an old edition. (That's probably true of the other CRC Handbooks as well, except maybe the one on math...) Eshbach's Handbook of Engineering Fundamentals still has a good section on astronautics - some orbital stuff, and lots of spacecraft control. John Roberts roberts@cmr.ncsl.nist.gov ------------------------------ Date: 14 Jul 92 12:13:50 GMT From: Conor O'Neill Subject: Giotto Update - 07/13/92 Newsgroups: sci.space,sci.astro In article <1992Jul13.163119.304@elroy.jpl.nasa.gov> baalke@kelvin.jpl.nasa.gov writes: > > GIOTTO STATUS REPORT [ bits deleted ] >mode should an uplink be required. Visual indications of the encounter ^^^^^^ >consisted of a sharp negative change of approximately 120 Hz in the doppler >residuals and a small decrease in the downlink AGC (Automatic Gain Control). Well, somebody's eyesight is obviously a lot better than mine! --- Conor O'Neill, Software Group, INMOS Ltd., UK. UK: conor@inmos.co.uk US: conor@inmos.com "It's state-of-the-art" "But it doesn't work!" "That is the state-of-the-art". ------------------------------ Date: 14 Jul 92 18:09:36 GMT From: Bill Higgins-- Beam Jockey Subject: Hungry for Instant Comet Science (was Re: Giotto Update - 07/13/92) Newsgroups: sci.space In article <1992Jul13.163051.23285@news.arc.nasa.gov>, baalke@kelvin.jpl.nasa.gov (Ron Baalke) writes: > GIOTTO STATUS REPORT > On July 10 the Giotto spacecraft encounterd Comet Grigg-Skjellerup > with the closest approach to the nucleus at about 200 km. Thanks to Ron for posting this bulletin... but it doesn't say much about what Giotto learned. Has there been any "instant science" in the press? I haven't seen anybody discuss it on Usenet, nor in the other places I get my news. The only other thing I know about Giotto is that NASA Administrator Goldin visited ESOC in Germany to watch the encounter. Bill Higgins, Beam Jockey | According to the doctrine Fermi National Accelerator Laboratory | of natural selection, Bitnet: HIGGINS@FNAL.BITNET | *you* were designed Internet: HIGGINS@FNAL.FNAL.GOV | by a committee. SPAN/Hepnet: 43011::HIGGINS | The biggest committee ever. ------------------------------ Date: Wed, 15 Jul 1992 04:57:04 GMT From: Ron Baalke Subject: Hungry for Instant Comet Science (was Re: Giotto Update - 07/13/92) Newsgroups: sci.space In article <1992Jul14.120936.1@fnalb.fnal.gov>, higgins@fnalb.fnal.gov (Bill Higgins-- Beam Jockey) writes... >In article <1992Jul13.163051.23285@news.arc.nasa.gov>, baalke@kelvin.jpl.nasa.gov (Ron Baalke) writes: >> GIOTTO STATUS REPORT >> On July 10 the Giotto spacecraft encounterd Comet Grigg-Skjellerup >> with the closest approach to the nucleus at about 200 km. > >Thanks to Ron for posting this bulletin... but it doesn't say much >about what Giotto learned. I haven't heard anything about any science results myself. We just track the spacecraft and forward the data to ESOC in Germany. Giotto is an ESA mission and it is up to them to interpret the data and announce the results. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@kelvin.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |__ M/S 525-3684 Telos | In 1991 there were 16 names /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | listed on the FBI's ten |_____|/ |_|/ |_____|/ | most wanted list. ------------------------------ Date: 14 Jul 92 08:59:49 GMT From: Nick Szabo Subject: Interplanetary communications relays Newsgroups: sci.space Interesting ideas; some points to ponder: * The data still has to come down to Earth. The space-based antenna only reduces the requirement for ground facilities, it does not replace them. If the relay is in Earth orbit the ground receiver can be small, and the relay provides better scheduling flexibility with a 24-hour view period. If the relay is itself in deep space the savings comes primarily from operations with large numbers of space probes (eg Martian comsat for rover network); the ground antenna is still constrained to c. 10 hour view periods. * Good deep-space relay locations may be Sun/Earth LaGrange points, which are much closer to planets in opposition. * The main benefit comes when we can deploy or assemble large (eg 70-100m) antennas in orbit for less cost than building gravity-constrained receivers on the ground. * On a more down-to-earth note, we could really use a good DSN complex in South America: the American side of the planet has the worst large antenna coverage! The other side has Australia's Canberra complex with Japan and Russia as backup, but only one Goldstone 70m on this side. >The capabilities of the relays could be considerably enhanced by adding >onboard storage. Storage adds a considerabile amount of communications flexibility, whether on a relay or the probe itself. For example, Magellan takes a huge toll on DSN resources, and has left parts of Venus unmapped. It needs to download the data before the next pass, which leads to inflexible DSN scheduling requirements, which conflict with other missions such as Galileo when they are in the same part of the sky. -- szabo@techbook.COM Public Access User --- Not affiliated with TECHbooks Public Access UNIX and Internet at (503) 644-8135 (1200/2400, N81) ------------------------------ Date: 15 Jul 92 04:51:50 GMT From: Ron Baalke Subject: Magellan Update - 07/14/92 Newsgroups: sci.space,sci.astro Forwarded from the Magellan Project MAGELLAN STATUS REPORT July 14, 1992 1. Magellan continues to operate under the M2192 command sequence, but due to degradation of high rate telecommunications the 360 kHz subcarrier has been turned off. 2. Both stars were missed on orbit #5288 yesterday and one was missed on orbit #5292 last night, but the attitude control remains precise. 3. Yesterday controllers implemented the software patch to control the radar heater setpoints. Transmitter B is now at 49.8 deg. C. 4. Later today they expect to swap the High Gain Antenna to S-band and swap from Receiver B to Receiver A. Early tomorrow, a swap from Transmitter B to Transmitter A is planned. 5. All of these spacecraft reconfigurations are designed to preserve Transmitter B performance for high priority radar mapping in early September. 6. This has required a temporary interuption in SAR (Synthetic Aperture Radar) data acquisition while the Project formulates the best Transmitter B operational mode for filling the one remaining gap and for later mapping operations. 7. Recovery of this so-called "Thermal/Transmitter Gap" would add about 1.5% to the Venus surface coverage of the Magellan mission, bringing the total to about 99%. The primary mission objective was to achieve at least 70%. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@kelvin.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |__ M/S 525-3684 Telos | In 1991 there were 16 names /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | listed on the FBI's ten |_____|/ |_|/ |_____|/ | most wanted list. ------------------------------ Date: 14 Jul 92 15:24:09 GMT From: Bill Higgins-- Beam Jockey Subject: N2 in nuclear thermal rocket / Hohmann to Venus Newsgroups: sci.space In article , mwallis@clubzen.fidonet.org (Michael Wallis) writes: > m0102@tnc.UUCP (FRANK NEY) writes: > >> Excuse me, but I have a CRC-HCP (1991 ed) and have never seen any >> orbit information in it. >> >> If I am wrong, please point me to chapter and section. Thank you. > > Oh??? Sheesh! Mine was an old (circa '74) one from when I was back in High > School. It was in section F with all the physical data on the planets and > asteroids. Try the table of contents or index. If they've dropped it, I'll > be very disappointed. Maybe the CRC editors decided that spaceflight was a foolish dream, that Hohmann orbits were only of interest to a technical elite who had access to more specialized reference books anyway. Once upon a time, in the rosy Sixties, it looked like *lots* of people might want to know about interplanetary transfer trajectories. So they put the tables in the Rubber Handbook. Later, in the Eighties, they got disillusioned and took it out. :-( Frank, older editions *do* have the table... During the first and second stage Bill Higgins flights of the vehicle, if a serious Fermi National Accelerator Laboratory irretrievable fault should occur and HIGGINS@FNALB.BITNET the deviation of the flight attitude of HIGGINS@FNAL.FNAL.GOV the vehicle exceeds a predetermined SPAN/Hepnet: 43011::HIGGINS value, the attitude self-destruction system will make the vehicle self-destroyed. --Long March 3 User's Manual Ministry of Astronautics, People's Republic of China (1985) ------------------------------ Date: 15 Jul 92 01:19:06 GMT From: David Lesher Subject: Now, where at last ? (Re: apollo 10) Newsgroups: sci.space Others said # So where is it (the LM ascent stage, and the descent) ? # # And -- Is there a listing (or something like) where those hardware of past # space endeavors went, which is not on earth or earth orbit ? (Apollo AND # unmanned probes) Well, I think the folks at NORAD in Colorado Springs keep track of everything up there. But, I doubt they answer many questions..... -- A host is a host from coast to coast..wb8foz@skybridge.scl.cwru.edu & no one will talk to a host that's close.......................... Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433 ------------------------------ Date: 15 Jul 92 00:17:19 GMT From: Ron Baalke Subject: Space Digest Returns! Newsgroups: sci.space In article <1992Jul14.142657.148401@cs.cmu.edu>, digests@isu.isunet.edu (Email Digest Server) writes... > The Space Magazine is no longer available. Perhaps in the future >someone will volunteer to moderate it, but for the moment no one is available. > The Space Magazine was a compilation of the "best of" postings to sci.space. However, the sci.space.news newsgroup essentially fills that role now. There is a mailing list available for the sci.space.news newsgroup, and if you want to be added to the mailing list then contact either myself or Peter Yee (yee@ames.arc.nasa.gov). ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@kelvin.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |__ M/S 525-3684 Telos | In 1991 there were 16 names /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | listed on the FBI's ten |_____|/ |_|/ |_____|/ | most wanted list. ------------------------------ Date: 14 Jul 92 23:08:00 GMT From: seds%cspar.dnet@Fedex.Msfc.Nasa.Gov Subject: Space Transportation Infrastructure Costs (Was Re: Interstates) Newsgroups: sci.space In article <9207091137.AA10285@cmr.ncsl.nist.gov>, roberts@CMR.NCSL.NIST.GOV (John Roberts) writes... > >-From: fcrary@ocf.berkeley.edu (Frank Crary) >-Subject: Re: Interstates >-Date: 8 Jul 92 06:30:17 GMT >-Organization: U.C. Berkeley Open Computing Facility > >-In article <9207080415.AA02036@cmr.ncsl.nist.gov> roberts@CMR.NCSL.NIST.GOV (John Roberts) writes: >->There's a plaque at a rest stop on I-70 out west somewhere that tells the >->story. Back when Eisenhower was a low-ranking army officer, he was part of a >->convoy traveling from the east coast to the west coast. The trip took an >->incredibly long time, something like 40 days! When he became president, he had >->a strong interest in improving the highway system. > >-I think it was more like 70 days. The plaque is at a rest stop in western >-Kansas, between (I think) Hays and Salina. > >-I'm not sure what your point is though. > >Just a possible origin for the connection between the military and the >Interstate highway system. > >John Roberts >roberts@cmr.ncsl.nist.gov > This is part of the thread that I have been talking about on the proper role of the government in developing space. Transportation systems have always ( from Phonecian Government supported shipping, Roman Roads, American Canals and Interstates) been the development responsiblity of government. Why? Increased commerce at a lower cost has always been the incentive. This gets the government a vastly increased tax base upon which to feed its lusts as well as to benefit the ones it is supposed to benefit. The military aspect has always been part of the equation as well. There would be no Boeing or McDonnel Douglas as they are today without the B-17 and the DC-3 (C-47). I think a consensus is growing on this net group that cheap transportation is the number 1 priority in all of our future wonderful plans for space. Maybe instead of fighting about manned vs unmanned we could jointly promote the development of a transportation infrastructure that will greatly lower the cost of manned space for their purposes and unmanned space for ever grander tours of ever farther places. I make a suggestion that those on here with expertise begin to post your ideas for lowering transportation costs. Included with this would be cost analyses proffered by good ole Wales regarding current space transportation systems with the rationals behind the cost figures. Then with that as a baseline then new or emerging systems could be baselined as to their cost and performance along with an Ideal system with a strawman cost scenario. This could be validated by datum taken from other transportation system cost reductions over time such as from the railroads, interstates, and Airplanes. This could serve as a VALID basis upon which to evaluate the wild and wooly ideas that are sure to emerge from this discussion. Dennis, University of Alabama in Huntsville ------------------------------ Date: 14 Jul 1992 17:07:56 GMT From: Jay Maynard Subject: STS-47 SAREX fact sheet Newsgroups: rec.radio.amateur.misc,sci.space,sci.space.shuttle Shuttle Amateur Radio Experiment (SAREX) Fact Sheet STS-47 Space Shuttle Endeavour When: Mid-September, 1992 for 6 days of 2 meter operations. Where: Earth Orbit. Altitude 300 kilometers, with radio coverage of latitudes from 70 degrees North to 70 degrees South. Operators: Dr. Jay Apt N5QWL and Dr. Mamoru Mohri 7L2NJY. N5QWL is the flight engineer for STS-47 and will operate the shuttle systems during the "night" shift, while 7L2NJY will be one of the scientists performing experiments in a laboratory in the shuttle's cargo bay during the "day" shift. Modes: FM Voice VOICE CALL SIGNS: N5QWL and 7L2NJY Packet (Beacons giving daily mission activities by N5QWL daily if I get a chance, and robot QSOs - successful connects will be issued a contact number by the robot) PACKET CALL SIGN: W5RRR-1 Frequencies: We will operate split. PLEASE DO NOT TRANSMIT ON THE DOWNLINK FREQUENCY! VOICE: Downlink (shuttle transmits) on 145.55 MHz Uplink (ground transmits) on 144.95, 144.91, 144.97 (except over Europe) - we'll listen on those 3 frequencies to spread out the pileup a bit. Uplink for Europe only: 144.80, 144.75, 144.70 Successful QSOs on voice will be facilitated by using standard international phonetics for your call sign. We will not answer any stations using non-standard phonetics. Use your entire call sign - we log with an audio tape recorder. Do not use our call sign - passes are very short, and we want to work as many folks as possible. PACKET: Downlink (shuttle transmits) on 145.55 Uplink (ground transmits) on 144.70 (worldwide) If you can, decrease your radio's deviation to 3 KHz (most are initially set at 5 KHz) and compensate for the Doppler shift. If you cannot, wait until a minute or 90 seconds after we come over your horizon to transmit - that will put you within our IF. If a station transmits without following these suggestions, we just hear what sounds like a noisy carrier. The above applies to both voice and packet. QSL via: N5QWL, 806 Shorewood Drive, Seabrook, Texas 77586 USA Include a self-addressed stamped envelope (SASE). Non-US stations include a self addressed envelope with $0.50 of US postage affixed or appropriate IRCs. Include the Callsign worked, Date, UTC, Mode, and Frequency. For packet contacts, include the QSO number issued by the robot. SWL QSL's: Include the Callsign heard, Date, UTC, Mode, and Frequency. Information during the mission: AMSAT bulletins, Compuserve, Genie, Prodigy, local packet bulletin boards, ARRL bulletins, and HF voice from NASA Johnson Space Center ARC, Houston, Texas, W5RRR, or NASA Goddard Spaceflight Center ARC, Greenbelt, Maryland, WA3NAN, frequencies listed below. W5RRR may be found on or near: 7.215, 14.280, 21.360, and 28.400. WA3NAN retransmits NASA Select Audio and SAREX bulletins simultaneously on or near 3.860, 7.185, 14.295, 21.395, and 28.650. The NASA Info BBS at Johnson Space Center, Houston, will also carry Keplerian elements and SAREX bulletins. (713) 483-2500, 1200 baud, 8-N-1. At the ENTER NUMBER: prompt, type 62511 and log onto the BBS. The Keps and bulletins will be in the welcome message. Disconnect rapidly to facilitate access by others. Operations Notes: N5QWL will be asleep over most USA passes, and 7L2NJY will be busy with laboratory duties for most US passes, so try us on packet over the USA. Remember, our packet call sign is W5RRR-1. We'll try to work voice (1) when we are not otherwise engaged, and (2) at night or when the ground is cloudy (we are generally busy taking pictures of the Earth during clear daylight passes). Our orbit will carry us over the Northern hemisphere in daylight. We plan to work 6 schools on this mission: 2 in the US, 3 in Australia, and 1 in Europe or Africa. We do not plan any orbiter maneuvers after the first 6 hours of the flight, so orbital elements obtained early in the flight ought to be pretty good for the entire flight. If I can get to it, I'll activate the SAREX about 3 hours into the mission; deactivation will occur at about 6 days, 8 hours after launch. The orbiter attitude is planned to be tail down, payload bay south. The SAREX antenna will be in the right forward window, so most contacts should have a good antenna pattern from AOS to TCA (time of closest approach). Prelaunch Keplerian Elements (Courtesy of Gil Carman of the JSC ARC): STS-47 1 00047U 92255.65952351 .00092000 00000-0 29200-3 0 44 2 00047 57.0019 106.3148 0009301 264.7374 95.2615 15.90241453 28 Satellite: STS-47 Catalog number: 00047 Epoch time: 92255.65952351 =====> (11 SEP 92 15:49:42.83 UTC) Element set: JSC-004 Inclination: 57.0019 deg RA of node: 106.3148 deg Space Shuttle Flight STS-47 Eccentricity: .0009301 Pre-launch SGP4 Keplerian Elements Arg of perigee: 264.7374 deg Launch: 11 SEP 92 14:23:00 UTC Mean anomaly: 95.2615 deg Mean motion: 15.90241453 rev/day W5RRR Decay rate: 9.2000e-04 rev/day*2 NASA Johnson Space Center Epoch rev: 2 73, N5QWL 12 July 1992 [Direct comments and questions to Gerry Creager, N5JXS, at gcreager@gothamcity.jsc.nasa.gov. --K5ZC] -- Jay Maynard, EMT-P, K5ZC, PP-ASEL | Never ascribe to malice that which can jmaynard@oac.hsc.uth.tmc.edu | adequately be explained by a .sig virus. "[...] have you noticed how many people have joined you on the back of Rosinante to help subdue this particular windmill?" -- Dan Herrick ------------------------------ Date: Tue, 14 Jul 92 16:36:39 -0400 From: John Greiner Subject: test Newsgroups: cmu.test This is a test of xrn line width. al;sjf;lkasjdf;ljas;ld asl;dfja ;lskdjf ;laskdjflkois kldfjaass. jg ------------------------------ Date: Tue, 14 Jul 92 12:03:52 edt From: op@dg-rtp.dg.com ----- Mail rejected by CEO. ----- Unknown Destination Host Mail not sent to:rob demopoulos@csc05.ceo ----- Unsent message follows ----- From: space@isu.isunet.edu To: "Space.Digest.Readers"@dg-smtp.ceo Subject: Space Digest V15 #001 X-Ceo_Options: Document See document for message. CEO document contents: Received: from dg-rtp.dg.com (dg-rtp) by rtp41.rtp.dg.com (1.00/2.1) id AA00052; Tue, 14 Jul 92 10:43:24 edt Received: from isu.isunet.edu by dg-rtp.dg.com (5.4.1/dg-rtp-proto) id AA10964; Tue, 14 Jul 1992 10:40:45 -0400 Received: by isu.isunet.edu (5.64/A/UX-2.01) id AA24421; Tue, 14 Jul 92 10:22:01 EDT Message-Id: <9207141422.AA24421@isu.isunet.edu> Date: Tue, 14 Jul 92 09:38:15 From: Space Digest Reply-To: Space-request@isu.isunet.edu Subject: Space Digest V15 #001 To: Space.Digest.Readers Precedence: bulk Space Digest Tue, 14 Jul 92 Volume 15 : Issue 001 Today's Topics: Space Digest Returns! Welcome to the Space Digest!! Please send your messages to "space@isu.isunet.edu" (on Internet). If you are on Bitnet, you must use a gateway (e.g., "space%isu.isunet.edu@CUNYVM"). Please do **NOT** send (un)subscription requests to that address! Instead, send the message "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: 14 Jul 92 09:30:00 EST From: digests@isu.isunet.edu Subject: Space Digest Returns! ==================== SPACE DIGEST RETURNS!!!!!! ==================== Space Digest, an electronic mailing list for all space-related topics, is back in action! After several weeks of changing moderators and fixing dozens of technical problems, everything is finally ready to go. ======================= WHAT IS SPACE DIGEST? ====================== Space Digest is a public forum for discussing all types of space-related topics. Email to the digest is collected during the day, and the condensed collection (sorted by Subject) is distributed at night. Three to four digests will be mailed on a typical day. Technically, Space Digest mirrors the Usenet newsgroup sci.space; all posts made to sci.space will appear in Space Digest, and vice versa. So if you have access to the sci.space newsgroup you do *not* need to subscribe to Space Digest. Space Digest is *UNMODERATED*. That means nothing and no one will be censored, so it's up to everybody to observe proper netiquette (e.g., read the Frequently-Asked-Questions list before posting a common question, and don't flood the list with lots of email). ======================== HOW DO I USE IT? ========================== Send all your subscription/unsubscription requests to: listserv@uga if you're on BITNET RICE::BOYLE if you're on SPAN (NSInet) UTADNX::UTSPAN::RICE::BOYLE if you're on THENET space-request@isu.isunet.edu if you're on Internet and do *not* have access to the sci.space newsgroup Whichever address you use, please format your request as follows (using your own name, of course): subscribe space Mark Maimone Send your contributions to the digest (which *everybody* on the list and in the newsgroup will have to read) to: space@isu.isunet.edu from Internet EAST::"space@isu.isunet.edu" from SPAN (NSInet) space%isu.isunet.edu@CUNYVM from BITNET ================== THANK YOU FOR YOUR PATIENCE!! ================== Although we are confident the new configuration will work eventually, we ask for your patience in the first few days/weeks of operation. There are likely to be literally dozens (if not hundreds) of bad addresses on the mailing list, and we will need time to find them all. If you should receive too many (or not enough) copies of the digest, please send a message to space-REQUEST@isu.isunet.edu. We will respond as soon as we are able. Finally, a big THANK YOU!! to the folks who helped us make the transition to our new system: former moderators Todd Masco and Ted Anderson, the systems people at Carnegie Mellon, and all the Digest readers who provided advice (and some code!) for the port. Space Digest is now being administered under the auspices of the International Space University, at their Executive Offices in Cambridge, Massachusetts, USA. The folks there have donated the use of their hardware, and the time of several staff and volunteer workers, for this project. The principal maintainers at this time are Steve Abrams (steve@isu.isunet.edu) and Mark Maimone (mwm@cmu.edu), but please send all maintenance requests to the SPACE-REQUEST@ISU.ISUNET.EDU address. ======================= NOTES FOR OLD-TIMERS ====================== The most recent past issue was V14 #1087. We begin volume 15 with this announcement. The old addresses, space+@andrew.cmu.edu and space-request@andrew.cmu.edu, will continue to function for a while, but we ask that you please update your address lists to SPACE@ISU.ISUNET.EDU and SPACE-REQUEST@ISU.ISUNET.EDU. The Space Magazine is no longer available. Perhaps in the future someone will volunteer to moderate it, but for the moment no one is available. Some past volumes, and all future ones, will be available by anonymous-ftp on isu.isunet.edu (192.131.110.15), in directory /usr/anon/pub/space. If you don't have access to the FTP program, you can use an email-based FTP server. For information, send the message "help" to ftpmail@decwrl.dec.com if your account is on Internet; on Bitnet, use bitftp@pucc. The listserv at UGA also provides some retrieval and searching facilities. Send the message "help" to listserv@uga.bitnet for more details (Space Digest is known as "space" on that listserv). ------------------------------ End of Space Digest Volume 15 : Issue 001 ------------------------------ ------------------------------ End of Space Digest Volume 15 : Issue 002 ------------------------------