Return-path: X-Andrew-Authenticated-as: 7997;andrew.cmu.edu;Ted Anderson Received: from hogtown.andrew.cmu.edu via trymail for +dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl@andrew.cmu.edu (->+dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl) (->ota+space.digests) ID ; Wed, 6 Feb 91 01:30:39 -0500 (EST) Message-ID: <4bfu-7G00WBw0DmU4d@andrew.cmu.edu> Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Wed, 6 Feb 91 01:30:32 -0500 (EST) Subject: SPACE Digest V13 #116 SPACE Digest Volume 13 : Issue 116 Today's Topics: Any opinions on EZcosmos software? Magellan article Re: Fire in Space Galileo Update - 01/31/91 Re: Metrics (was Re: Rotating Joints for Habitat) Re: Ultimate Weapon Re: Fire in Space GEOMAGNETIC STORM WARNING INFORMATIONAL UPDATE Administrivia: Submissions to the SPACE Digest/sci.space should be mailed to space+@andrew.cmu.edu. Other mail, esp. [un]subscription requests, should be sent to space-request+@andrew.cmu.edu, or, if urgent, to tm2b+@andrew.cmu.edu ---------------------------------------------------------------------- Date: Thu, 31 Jan 91 14:52 EDT From: HAMMO002@DUKEMC.MC.DUKE.EDU Subject: Any opinions on EZcosmos software? Sender: HAMMO002@DUKEMC.MC.DUKE.EDU X-Organization: Duke University Medical Center - Durham NC, USA X-Envelope-To: SPACE+@ANDREW.CMU.EDU Received: and processed by DEMPO version 4.6 To: DEMPO!BITNET::SPACE+@ANDREW.CMU.EDU From: HAMMO002 "HAMMOND, WILLIAM E, III " Received by DEMPO: Thu Jan 31 14:51:43 1991 From: MEDINF::EDWARD "William E. Hammond III" 31-JAN-1991 14:50:36.99 To: DEMPO!BITNET::SPACE+@ANDREW.CMU.EDU CC: Subj: Any opinions on EZcosmos software? ----------------------------------------------------------------- Has anyone on the net purchased EZcosmos sofware? I'm thinking about purchasing a copy and wondered if anyone has any ideas about it, ie is there something better that I should look at. This software is for IMB PCs. thx! One more question, I am also looking for source code for XPHOON (it prints an image of the moon's current phase on screen zero of an X-WINDOW type terminal), Thanks in advance! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HAMMO002@DUKEMC.BITNET /"Ask not what your country can do for you, Edward Hammond, Analyst programmer/but ask what you can do for your country."JFK Duke University Med Ctr /"World peace, it's not a dream anymore, it's a Durham NC, 27710 /necessity." Me. ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 31 Jan 91 19:36:28 GMT From: snorkelwacker.mit.edu!usc!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@bloom-beacon.mit.edu (Ron Baalke) Organization: Jet Propulsion Laboratory, Pasadena, CA. Subject: Magellan article Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu Associated Press -- 1/31/91 "Magellan Venus" By Lee Siegel "Intense squeezing, stretching, collapsing and bulging of Venus' landscape may explain why the planet is marked by an amazing network of faults and cracks, Magellan spacecraft geologists say." The Los Angeles-based science writer says the region of Venus' Alpha highlands is so extensively deformed by geological forces that NASA was describing it like bread dough which had been kneaded. The story says the Magellan radar data have revealed extensively fractured regions, named tesserae after the Greek word for tile, which cover from 10 to 15 percent of the planet's surface and which contain criss-crossing faults which may cause "Venusquakes." The writer says that analysis of the tesserae data so far seems to indicate the tesserae features may have been subjected to different forces at different times. Some regions may have been created as cooler rock in Venus' crust slowly sank deeper into the planet and thereby created a downward drag that squeezed overlying layers to form the faults, ridges and valleys. The story says that molten rock rising from deep inside Venus may have also created some tesserae by making the landscape bulge upward and stretch apart. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@mars.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |___ M/S 301-355 | It's 10PM, do you know /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | where your spacecraft is? |_____|/ |_|/ |_____|/ | We do! ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 31 Jan 91 23:15:22 GMT From: sdd.hp.com!cs.utexas.edu!news-server.csri.toronto.edu!utzoo!henry@ucsd.edu (Henry Spencer) Organization: U of Toronto Zoology Subject: Re: Fire in Space References: <7332@crash.cts.com> Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu In article <7332@crash.cts.com> dang@crash.cts.com (Dan Gookin) writes: >I have this perverse curiosity about what fire--specifically a >flame--would look like in space. > >If figure if you lit a match, it probably would lack the familiar >conical shape the flame has here on earth. In fact, I think it would >look like a point of light or perhaps a spherical flame... If there's enough of an air current to keep it going, you'll get something more or less like a 1G flame, in the appropriate direction. If not, you'll get a spherical smoke cloud and no flame, as it extinguishes itself. (But if you move it, it will re-ignite (!), because there's still a lot of hot, partially-reacted combustion products in that cloud just waiting for some oxygen.) -- If the Space Shuttle was the answer, | Henry Spencer at U of Toronto Zoology what was the question? | henry@zoo.toronto.edu utzoo!henry ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 31 Jan 91 18:33:33 GMT From: snorkelwacker.mit.edu!usc!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@bloom-beacon.mit.edu (Ron Baalke) Organization: Jet Propulsion Laboratory, Pasadena, CA. Subject: Galileo Update - 01/31/91 Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu GALILEO STATUS REPORT January 31, 1991 The Galileo spacecraft is 25.6 million miles from Earth, and 87 million miles from the Sun. Its speed in solar orbit is 81,773 mph. The round-trip communication time is 4 minutes, 35 seconds. Galileo's health and performance continue to be excellent. The spacecraft is spinning at 2.89 rpm, with the spin axis pointed within 2 degrees of the Sun, updated every other day. Telemetry at 40 bits per second includes Magnetometer, Dust Detector and star buffer readouts. The last, a record of star intensities taken by the star sensor, is used to update the attitude control team's star catalog. As of today, communications will use the primary Low Gain Antenna, located on the sunlit side of the spacecraft. ___ _____ ___ /_ /| /____/ \ /_ /| Ron Baalke | baalke@mars.jpl.nasa.gov | | | | __ \ /| | | | Jet Propulsion Lab | ___| | | | |__) |/ | | |___ M/S 301-355 | It's 10PM, do you know /___| | | | ___/ | |/__ /| Pasadena, CA 91109 | where your spacecraft is? |_____|/ |_|/ |_____|/ | We do! ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 31 Jan 91 05:59:07 GMT From: sdd.hp.com!uakari.primate.wisc.edu!samsung!munnari.oz.au!mel.dit.csiro.au!yarra!melba.bby.oz.au!zvs@ucsd.edu (Zev Sero) Organization: Burdett, Buckeridge and Young Ltd. Subject: Re: Metrics (was Re: Rotating Joints for Habitat) References: , <1331@geovision.UUCP> Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu Henry> "Meter" is an acceptable alternate spelling of "metre" in the English- Henry> speaking countries, and in the US :-). In some English-speaking countries, but not in Australia. Over here a meter is strictly a measuring device. -- Zev Sero - zvs@bby.oz.au This I say unto you, be not sexist pigs. - The prophetess, Morgori Oestrydingh (S.Tepper) ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 31 Jan 91 20:35:03 GMT From: anil@astro.as.utexas.edu (Anil Dosaj) Organization: U. Texas @ Austin Astronomy/McDonald Observatory Subject: Re: Ultimate Weapon References: <1991Jan22.152955.4632@d.cs.okstate.edu>, <3208@legs.UUCP> Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu In article <3208@legs.UUCP> lane@legs.UUCP (Lane Kagey) writes: >in article <1991Jan22.152955.4632@d.cs.okstate.edu>, rjs@d.cs.okstate.edu (Roland Stolfa) says: >> Xref: legs sci.astro:10710 sci.space:24964 >> >> Fellow spacers, lend me your eyes for a few seconds...ok, minutes. >> I would like to ask a few questions about black holes. As this progresses, >> you will see how it relates to my subject line. >> > >have any of you read "the krone experiment", i don't remember the author. >it described a physicist who 'discovered' how to build a black hole and >contain it. i won't give the details cause it would spoil it. > >it postulates several interesting effects and problems related to such a >situation. > > >Lane Kagey lane@ast.com -or- ...uunet!legs!lane >c/o AST Research Inc. Dept 670 fax: (714) 727-9358 >16215 Alton Parkway P.O. Box 19658 Tel: (714) 727-8468 >Irvine, California 92713-9658 > >-- >Lane Kagey lane@ast.com -or- ...uunet!legs!lane >c/o AST Research Inc. Dept 670 fax: (714) 727-9358 >16215 Alton Parkway P.O. Box 19658 Tel: (714) 727-8468 >Irvine, California 92713-9658 The Krone Experiment was written by our own Dr. John Craig Wheeler, at UT Austin. ------------------------------ Return-path: X-Andrew-Authenticated-as: 0;andrew.cmu.edu;Network-Mail Date: 31 Jan 91 22:37:36 GMT From: ncar.ucar.EDU!gary@handies.ucar.edu (Gary Strand) Organization: Climate Sensitivity and CO2 Research Group, CGD/NCAR Subject: Re: Fire in Space References: <7332@crash.cts.com> Sender: space-request@andrew.cmu.edu To: space@andrew.cmu.edu > Dan Gookin > If figure if you lit a match, it probably would lack the familiar conical > shape the flame has here on earth. In fact, I think it would look like a > point of light or perhaps a spherical flame. Why? What effect does gravity have on the burning particles, relative to the forces they feel from the other heated particles around them? I would think that since gravity plays such a small role in what a flame looks like, it would look the same on the Shuttle (say) as here on earth. -- Gary Strand There is only one success -- to be able Internet: strandwg@ncar.ucar.edu to spend your life in your own way. Voicenet: (303) 497-1336 - Christopher Morley ------------------------------ X-Delivery-Notice: SMTP MAIL FROM does not correspond to sender. Date: Thu, 31 Jan 91 23:20:14 MST From: std_oler%HG.ULeth.CA@vma.cc.cmu.edu (Cary Oler) Subject: GEOMAGNETIC STORM WARNING INFORMATIONAL UPDATE X-St-Vmsmail-To: st%"space+@andrew.cmu.edu" ********************************************* *** GEOMAGNETIC STORM WARNING UPDATE *** ********************************************* 01 February, 1991 Informational Update ------------- ATTENTION: Further analysis has been performed on potential impacts from the major energetic flare of 31 January. A major geomagnetic storm is still anticipated. The main phase of the storm is expected to occur either late on 01 February (UT time) or early on 02 February. A sudden storm commencement (SSC) is expected to precede this storm. The intensity of the predicted storm has been downgraded from potential planetary A-index values of 80 to betweeen 40 and 65. Higher latitudes will experience more intensive storming and higher magnetic A-index values. Translated, these figures mean that middle and low latitudes will experience major to high-intensity minor storming. A risk does still exist for possible brief bursts of severe storming over middle and low latitudes, although this is looking less likely now than it did 24 hours ago. High latitudes will experience major storming with possible frequent periods of severe storming. People should note that the accuracy of predicting magnetic activity from major flares is a very difficult task dependent on many unknowns. Hence, there is a risk that the magnetic storm may not be quite as intense as is predicted. On the other hand, there is also a risk that magnetic storming could exceed the values predicted. ALL OF THE WARNINGS WHICH WERE ISSUED ON 31 JANUARY REMAIN IN EFFECT. The probability for a magnetic storm is very high (80% or better). People who could be affected should continue to be on the alert for changes in conditions. A magnetic storm alert will be posted if magnetic storming occurs. To calm the fears which these warnings may have caused for people who are unaware or uneducated about these types of phenomena, please note that these events pose no threat to humans. They do represent significant threats, however, to the equipment and networks which we have established on earth. Communications is particularly susceptible to heavy impacts. However, no one should worry about receiving dangerous doses of radiation or other dangerous elements from the major flares and geomagnetic storms which occur. The earth has excellent natural protection mechanisms to protect us against any harm. Unfortunately, the equipment we have established and use (such as the electricity we consume, communications and satellite functions) can be threatened by this sort of activity. Damage to the equipment of susceptible industries can occur if appropriate safeguards are not taken. This is the reason the warnings are issued. Additional information: Satellite altitude protons increased to event levels at 06:00 UT on 31 January. They peaked at 240 p.f.u. at 16:20 UT on 31 January. They have been declining since then and are now at levels below 65 p.f.u. (still way above the event threshold). They are expected to continue declining unless another major proton flare occurs. A polar cap absorption (PCA) event occurred on 31 January and is presently in progress. Significant degradation in high-latitude and polar region radio propagation has resulted and is expected to continue for the next 36 to 48 hours (after the magnetic storm has passed). Significant degradation in middle and low latitude radio propagation conditions are still expected during the main phase of the expected geomagnetic storm on 02 February. Near blackout conditions could be experienced over the polar and high latitude regions, particularly during the sunlit periods of the day. Middle and low latitudes will suffer significant absorption, noise and very strong signal flutter and fading. However, there is a good possibility for some auroral backscatter communications on VHF frequencies over middle and high latitudes (possibly even stretching into the lower latitudes). Radio conditions should begin returning to more normal conditions during the post-storm residual magnetic activity, sometime late on 03 January to 04 January. Auroral storming is expected to begin sometime during the evening hours on 02 February for North American observers. Observers in the UK and Europe should witness the onset of the main phase of the geomagnetic and auroral storm in the early morning hours of 02 February (local time - possibly earlier). The leading edge of the auroral zone is expected to migrate southward to lie over regions near 45 to 55 degrees north latitude (there is a slight risk it could migrate further south, but this is not currently anticipated). Low latitude auroral observations will be possible during the main phase of this storm, particularly during the moonless hours of the evenings (the moon rises roughly around 21:00 local time on 02 February). Reports of auroral and/or radio condition observations would be appreciated. Please send descriptive reports (stating location, observation time, and observational summaries) to "std_oler@hg.uleth.ca". Thanks. Major flaring is still very likely over the next 24 to 72 hours. Several regions (namely, regions 6462 (S18W57), 6466 (S09W53), 6469 (S13W40), and 6471 (S12E02)) remain very capable of producing major energetic activity. There is still a high probability for further proton flaring from any of these regions. Hence, the risk for future strong satellite proton events and/or PCA event activity remains high. ** End of Warning ** ------------------------------ End of SPACE Digest V13 #116 *******************