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 ; Tue, 14 May 91 02:02:06 -0400 (EDT) Message-ID: Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Tue, 14 May 91 02:02:01 -0400 (EDT) Subject: SPACE Digest V13 #544 SPACE Digest Volume 13 : Issue 544 Today's Topics: Galileo Status for 05/10/91 (Forwarded) Re: wwn does it again! Re: Why the space station?y Re: Ethics of Terraforming (was Re: Terraforming Venus) trace gases in atmosphere Re: Terraforming Mars? Why not Venus? E-mail addr required for CIMSS/SSEC at Wisc. Uni. Re: Crater Found From 65-Million Year Old Asteriod NASA Prediction Bulletins, Part 2 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: 10 May 91 21:39:37 GMT From: usenet@ames.arc.nasa.gov (Peter E. Yee) Subject: Galileo Status for 05/10/91 (Forwarded) GALILEO MISSION STATUS May 10, 1991 The Galileo spacecraft is about 46.5 million miles from Earth, making its round-trip communication time 8 minutes 20 seconds. It is just over 140 million miles, or 1.5 astronomical units from the Sun. Speed in orbit is 55,600 mph. The spacecraft is in a stable, quiescent cruise state, transmitting at 1200 bits per second over the low-gain antenna. The high-gain antenna is still partially deployed. Galileo is in the all-spin mode, rotating at 2.89 rpm. The spin axis is being maintained close to the Sun line by planned pointing maneuvers. The only cruise-science instrument currently taking data is the dust detector. When the spacecraft entered its safing mode May 2, the command and data subsystem functions were switched automatically from the "A" computer string to the redundant "B" string because of a spurious transient signal. Yesterday afternoon the Galileo flight team commanded the "A" computer back on line, restoring fully redundant operation. ------------------------------ Date: 10 May 91 05:01:16 GMT From: VAX1.CC.UAKRON.EDU!mcs.kent.edu!usenet.ins.cwru.edu!agate!lightning.Berkeley.EDU!fcrary@tut.cis.ohio-state.edu (Frank Crary) Subject: Re: wwn does it again! > I didn't understand the citation, so I'm not sure who YK is... >YK>Secondly, the jumping around that we saw the astronauts doing is not >related to >YK>the lack of gravity on the moon compared to the Earth, but rather >that the >YK>astronauts had been lifting weights (a couple thousand pounds at a >time) to >YK>build up their legs so that they could jump as far as they did. > In fact, the hopping motion used by the Apollo astronauts had little to do with the lunar gravity, or thier ability to jump. The Apollo spacesuits were heavy, balanced poorly (all the weight was on the upper back) and allowed only limited leg motion. These problems mabe hopping the most effective way to move around. Frank Crary UC Berkeley ------------------------------ Date: 10 May 91 05:43:12 GMT From: prism!ccoprmd@gatech.edu (Matthew DeLuca) Subject: Re: Why the space station?y In article <1991May10.040526.17475@agate.berkeley.edu> fcrary@lightning.Berkeley.EDU (Frank Crary) writes: >In article <28534@hydra.gatech.EDU> ccoprmd@prism.gatech.EDU (Matthew DeLuca) writes: >While the pilot of the shuttle will be much better than the unmanned Progress >craft, the shuttle is also larger and less manuvrable than Progress. I'm not sure about 'less maneuverable' than Progress, but the lower acceleration isn't a disadvantage, necessarily; it'll be less likely that the shuttle will come in at a 'high' speed, so a situation where someone notices something 'just in time' will probably not happen. >>Also, I wouldn't put a lot of trust in Soviet docking abilities; they've been >>notoriously deficient in this area for thirty years. >The last manned docking failure in >the soviet program was Soyuz-T 8 in April 1983. Since then they have made >17 successful dockings. However, they do not always dock on the first >pass. Each time they fail to dock on a given pass is another time that they have to 'go around', running the risk of bumping into things. I've gotten the impression that it's not uncommon for them to need two or three tries to get docked...anyone have real numbers? The idea of using the shuttle arm is a pretty good idea; all you have to do is get the shuttle 'pretty close' and then pull yourself in. Considering the arm is controlled from the aft station, right by where the docking adaptor will be, it should be extremely reliable. -- Matthew DeLuca Georgia Institute of Technology "I'd hire the Dorsai, if I knew their Office of Information Technology P.O. box." - Zebadiah Carter, Internet: ccoprmd@prism.gatech.edu _The Number of the Beast_ ------------------------------ Date: 11 May 91 20:01:08 GMT From: mintaka!think.com!samsung!rex!rouge!dlbres10@bloom-beacon.mit.edu (Fraering Philip) Subject: Re: Ethics of Terraforming (was Re: Terraforming Venus) In article <155023@pyramid.pyramid.com> lstowell@pyrnova.pyramid.com (Lon Stowell) writes: >But what about the face? (Does anyone else think it sorta looks >like Maggie Thatcher?) Uh, perhaps the face shouldn't be discussed on this newsgroup. I don't mean to imply that the face is or is not an artifact, it's just that at this stage of the game, discussion of the face is pointless, and blanket statements about the face such as "Does anyone elxe think it sorta looks like Maggie Thatcher?" could end up putting you in a situation where you're stepping on a lot of people's blue suede shoes oops, I mean toes.... :-) -- Phil Fraering dlbres10@pc.usl.edu ''It's a Flash Gordon/E.E. Smith war, with superior Tnuctip technology battling tools and weapons worked up on the spot by a billion Dr. Zarkovs.`` - Larry Niven, describing the end to _Down in Flames_. ------------------------------ Date: 10 May 91 08:40:58 GMT From: eru!hagbard!sunic!news.funet.fi!funic!santra!saha.hut.fi!s34037k@bloom-beacon.mit.edu (Marko M{kynen) Subject: trace gases in atmosphere Can anyone tell me names of books,articles etc. from which I can find concentration profiles of all trace gases in atmosphere,up to 100km? Marko M{kynen Helsinki University of Technology s34037k@saha.hut.fi Laboratory of Space technology ------------------------------ Date: 10 May 91 04:20:09 GMT From: VAX1.CC.UAKRON.EDU!mcs.kent.edu!usenet.ins.cwru.edu!agate!lightning.Berkeley.EDU!fcrary@tut.cis.ohio-state.edu (Frank Crary) Subject: Re: Terraforming Mars? Why not Venus? In article guest@geech.gnu.ai.mit.edu (Guest Account) writes: >The Space Activity Suit doesn't have a cooling system. The wearer >cools himself as his sweat passes through the gore-tex. > The Space Activity Suit isn't the only one... Passing sweat is one of the things we are looking at for a Mars suit. We are looking at a "dense" membrane, rether than groe-tex, since gore-tex is very bad at holding pressure, passing contaminants (microbes from the astronauts to the biological samples and (possible) toxins from the Mars environment to the astronaut.) and also gore-tex is sensitive to the condition of its surface (if it, for example has detergent on it). >And besides, the SAS was promising. it would probably be better than >the ones in use today if the same inordinate amount of money was thrown >at it. There are many problems with the SAS. It is dificult to get into (even for a space suit). It provides NO protection against micrometeors, while the current station suit designs will protect against up to a 0.1 mm object at up to 10 km/s. But the greatest problem with the SAS is that it does not apply pressure evenly. While a fabric can easily put an even pressure on a smooth uniform object (a forearm for example) it is not at all good at putting equal pressure in cracks and crevices (between fingers, say). In vaccum, this could be a major health issue. Frank Crary UC Berkeley ------------------------------ Date: 10 May 91 08:19:29 GMT From: agate!linus!think.com!samsung!munnari.oz.au!uniwa!cc.curtin.edu.au!tfosterds@ucbvax.Berkeley.EDU (Foster_DS@cc.curtin.edu.au) Subject: E-mail addr required for CIMSS/SSEC at Wisc. Uni. Hello, Does anyone know the e-mail addresses for the Cooperative Institute for Meteorological Satellite Studies (CIMSS), at the Space Science and Engineering Center (SSEC) at University Of Wisconsin - Maddison ??? Thanks in advance, Dave Foster, Curtin University, Western Australia Internet: TFOSTERDS@cc.curtin.edu.au Bitnet: TFOSTERDS%cc.curtin.edu.au@cunyvm.bitnet UUCP : uunet!munnari.oz!cc.curtin.edu.au!TFOSTERDS ------------------------------ Date: 11 May 91 22:20:19 GMT From: mintaka!think.com!sdd.hp.com!cs.utexas.edu!news-server.csri.toronto.edu!utzoo!henry@bloom-beacon.mit.edu (Henry Spencer) Subject: Re: Crater Found From 65-Million Year Old Asteriod In article <821@newave.UUCP> john@newave.mn.org (John A. Weeks III) writes: >This is where it gets really wierd: CNN further reported that this >is evidence that a gigantic impact killed off the dinosaurs. I was >under the impression that an impact was suspected to have happend >all along based on the Iridum layer, but that no one has connected >the extinction to the impact... No, the finding of the iridium layer was what really heated up speculation that the impact might be connected with the extinction. Right at the boundary where species died like they'd been swept with a scythe, there are unmistakable signs of a huge meteorite/comet impact. The connection is still slightly obscure, with several proposed mechanisms and a lot of unknowns, but the "it's just a coincidence" faction is dwindling steadily. Impacts may not explain all the big extinctions, but the timing of this one looks just a bit too fortuitous. -- And the bean-counter replied, | Henry Spencer @ U of Toronto Zoology "beans are more important". | henry@zoo.toronto.edu utzoo!henry ------------------------------ Date: 10 May 91 21:03:02 GMT From: udecc.engr.udayton.edu!blackbird.afit.af.mil!tkelso@tut.cis.ohio-state.edu (TS Kelso) Subject: NASA Prediction Bulletins, Part 2 The most current orbital elements from the NASA Prediction Bulletins are carried on the Celestial BBS, (513) 427-0674, and are updated several times weekly. Documentation and tracking software are also available on this system. As a service to the satellite user community, the most current of these elements are uploaded weekly to sci.space. This week's elements are provided below. The Celestial BBS may be accessed 24 hours/day at 300, 1200, or 2400 baud using 8 data bits, 1 stop bit, no parity. - Current NASA Prediction Bulletins #844b - GPS BII-04 1 20302U 89085 A 91106.73331065 -.00000084 00000-0 00000 0 0 01794 2 20302 054.3986 304.6789 0029381 333.0204 026.8604 02.00556152010956 Meteor 3-3 1 20305U 89 86 A 91129.63146263 .00000043 00000-0 99999-4 0 3758 2 20305 82.5575 347.7583 0014972 232.7967 127.1796 13.15952924 73880 COBE 1 20322U 89 89 A 91130.06498151 .00000295 00000-0 21237-3 0 3292 2 20322 99.0114 142.2896 0009244 173.7396 186.3866 14.03078276 75325 Kvant-2 1 20335U 89 93 A 91130.00140218 .00035749 00000-0 33845-3 0 6892 2 20335 51.6013 121.0181 0008159 195.4316 164.6994 15.66562886 82841 GPS BII-05 1 20361U 89097 A 91102.25648239 .00000000 00000-0 00000 0 0 01370 2 20361 055.0029 128.5219 0062924 061.9649 298.7036 02.00558350000341 SPOT 2 1 20436U 90 5 A 91129.69362910 .00000574 00000-0 28778-3 0 5804 2 20436 98.7366 204.4571 0000694 114.7710 245.3531 14.20004999 67081 UO-14 1 20437U 90 5 B 91129.71567769 .00000611 00000-0 25687-3 0 3836 2 20437 98.6635 209.3940 0010712 283.6673 76.3034 14.29103363 67499 UO-15 1 20438U 90 5 C 91128.20125450 .00000490 00000-0 21053-3 0 2788 2 20438 98.6699 207.7847 0009500 286.6206 73.3921 14.28689248 67263 PACSAT 1 20439U 90 5 D 91129.47305946 .00000707 00000-0 29415-3 0 2803 2 20439 98.6728 209.4612 0010484 288.0686 71.9345 14.29191806 67462 DO-17 1 20440U 90 5 E 91130.08565512 .00000773 00000-0 31917-3 0 2826 2 20440 98.6733 210.1144 0010742 286.2761 73.7239 14.29275385 67557 WO-18 1 20441U 90 5 F 91127.04677172 .00000715 00000-0 29647-3 0 2794 2 20441 98.6710 207.1406 0011413 293.5119 66.4865 14.29319223 67121 LO-19 1 20442U 90 5 G 91127.23340965 .00000714 00000-0 29541-3 0 2807 2 20442 98.6710 207.3805 0011804 293.2438 66.7498 14.29395743 67151 GPS BII-06 1 20452U 90008 A 91104.64828609 -.00000008 00000-0 00000 0 0 01549 2 20452 054.3878 243.7085 0043963 051.6051 308.8222 02.00557816008908 MOS-1B 1 20478U 90 13 A 91130.12262299 .00000188 00000-0 16562-3 0 5818 2 20478 99.1538 203.3284 0000412 87.8948 272.2258 13.94852946 63717 DEBUT 1 20479U 90 13 B 91129.39863014 .00000118 00000-0 31503-3 0 2269 2 20479 99.0235 118.9265 0541692 29.5106 333.5451 12.83196740 58585 FO-20 1 20480U 90 13 C 91129.94007955 .00000032 00000-0 12036-3 0 2216 2 20480 99.0269 119.3631 0541409 28.2030 334.7299 12.83179903 58657 MOS-1B R/B 1 20491U 90 13 D 91129.98321380 .00000775 00000-0 15074-2 0 2851 2 20491 99.0257 132.1564 0470473 345.3095 13.4772 13.02849417 58956 LACE 1 20496U 90 15 A 91127.60202671 .00009847 00000-0 50091-3 0 5419 2 20496 43.0958 333.7110 0019960 240.0396 119.8471 15.16805604 67740 RME 1 20497U 90 15 B 91128.37827519 .00024018 00000-0 44334-3 0 5925 2 20497 43.1077 226.4528 0020287 331.4401 28.5330 15.48414243 69002 Nadezhda 2 1 20508U 90 17 A 91129.13585318 .00000130 00000-0 12751-3 0 3276 2 20508 82.9559 179.5660 0044976 157.2251 203.0914 13.73310903 59746 OKEAN 2 1 20510U 90 18 A 91129.07258868 .00002264 00000-0 33330-3 0 5447 2 20510 82.5428 157.3079 0017753 299.9379 59.9983 14.74922484 64077 INTELSAT-6 1 20523U 90 21 A 91126.72876607 .00004017 00000-0 27131-3 0 5227 2 20523 28.3351 301.9457 0013965 50.9640 309.2724 15.03893229 63179 GPS BII-07 1 20533U 91105.05693773 -.00000034 10000-3 0 2207 2 20533 55.1887 3.7570 0034776 95.6026 264.8348 2.00567925 7677 PegSat 1 20546U 90 28 A 91128.13137408 .00012833 00000-0 65369-3 0 5225 2 20546 94.1382 29.0137 0129033 237.0754 121.8017 15.09731711 58923 HST 1 20580U 91128.91502731 .00005378 00000-0 56353-3 0 4717 2 20580 28.4729 333.4161 0005197 278.1820 81.8166 14.87578603 56460 Glonass 44 1 20619U 90 45 A 91129.76972009 -.00000018 00000-0 99999-4 0 4958 2 20619 65.0687 27.7357 0021835 215.9855 143.9067 2.13103076 7580 Glonass 45 1 20620U 90 45 B 91129.41832942 -.00000018 00000-0 99999-4 0 5448 2 20620 65.0730 27.7513 0008741 30.7981 329.2930 2.13103207 7583 Glonass 46 1 20621U 90 45 C 91129.47727171 -.00000018 00000-0 99999-4 0 4441 2 20621 65.0869 27.7616 0011868 206.4886 153.4899 2.13102344 7583 Kristall 1 20635U 90 48 A 91130.00137061 .00063597 00000-0 59570-3 0 4892 2 20635 51.6035 121.0246 0007781 194.9797 164.9626 15.66576974 53720 ROSAT 1 20638U 90 49 A 91129.10244453 .00004529 00000-0 37285-3 0 2920 2 20638 53.0069 41.7882 0011924 226.1454 133.8550 15.00839809 51166 Meteor 2-19 1 20670U 90 57 A 91129.73598488 .00000381 00000-0 33345-3 0 2277 2 20670 82.5484 29.4461 0017468 89.2455 271.0699 13.83967312 43681 CRRES 1 20712U 90 65 A 91129.84617009 .00001681 00000-0 22112-2 0 2897 2 20712 17.8632 287.6871 7109841 61.6782 351.3993 2.44333749 7043 GPS BII-08 1 20724U 90 68 A 91102.41087082 .00000016 00000-0 99999-4 0 1214 2 20724 54.6934 184.3098 0096141 124.9826 235.9927 2.00564358 5043 Feng Yun1-2 1 20788U 90 81 A 91128.08853255 .00000337 00000-0 24753-3 0 1900 2 20788 98.9455 162.4441 0014643 291.1610 68.7992 14.01143963 34591 Meteor 2-20 1 20826U 90 86 A 91129.66480022 .00000225 00000-0 19539-3 0 1789 2 20826 82.5283 328.5364 0013782 354.8324 5.2699 13.83343182 30885 GPS BII-09 1 20830U 90 88 A 91 92.47526014 .00000012 00000-0 99999-4 0 890 2 20830 54.9154 127.0815 0074356 115.5295 245.3041 2.00568450 3923 GPS BII-10 1 20959U 90103 A 91103.35280476 .00000016 00000-0 99999-4 0 736 2 20959 54.9080 185.9076 0046990 214.5192 145.2306 2.00567745 2730 DMSP B5D2-5 1 20978U 90105 A 91129.96068054 .00001083 00000-0 41458-3 0 1888 2 20978 98.8412 166.1109 0079676 251.5794 107.6712 14.30943604 22789 Soyuz TM-11 1 20981U 90107 A 91129.93760721 .00036910 00000-0 34929-3 0 1894 2 20981 51.6037 121.3494 0007881 198.5490 161.5539 15.66558785 24820 Glonass 47 1 21006U 90110 A 91128.57768729 .00000020 00000-0 99999-4 0 1894 2 21006 64.8391 147.3846 0062083 187.3717 172.6078 2.13102159 3242 Glonass 48 1 21007U 90110 B 91129.22388716 .00000020 00000-0 99999-4 0 1937 2 21007 64.8586 147.3764 0038967 181.9946 178.0486 2.13100467 3250 Glonass 49 1 21008U 90110 C 91129.10674315 .00000020 00000-0 99999-4 0 1893 2 21008 64.8371 147.3630 0011353 289.8147 70.1211 2.13100092 3258 INFORMTR-1 1 21087U 91 6 A 91129.80781776 .00000192 00000-0 19068-3 0 765 2 21087 82.9395 262.1162 0035688 8.0673 352.1047 13.74380376 13750 Cosmos 2123 1 21089U 91 7 A 91129.46037355 .00000151 00000-0 14996-3 0 767 2 21089 82.9239 132.8179 0030752 29.2832 331.0039 13.73895015 12823 MOP-2 1 21140U 91 15 B 91 97.28897163 .00000004 00000-0 99999-4 0 325 2 21140 1.1414 297.0546 0002168 14.4682 344.4133 1.00295186 156 Nadezhda 3 1 21152U 91 19 A 91129.86496166 .00000006 00000-0 00000 0 0 849 2 21152 82.9354 87.2858 0043299 129.5926 230.9086 13.73339127 7973 Progress M7 1 21188U 91 20 A 91127.38574978 .00019917 00000-0 19219-3 0 1380 2 21188 51.6080 134.3165 0007999 189.0700 171.0147 15.66446141298776 Almaz-1 1 21213U 91 24 A 91130.07316775 .00148863 99471-5 33160-3 0 1101 2 21213 72.7010 0.9183 0010552 265.2612 94.8503 15.97641231 6325 Cosmos 2139 1 21216U 91 25 A 91129.06612509 -.00000018 00000-0 99999-4 0 923 2 21216 64.8206 27.8836 0006933 233.5248 126.4467 2.13103004 758 Cosmos 2140 1 21217U 91 25 B 91129.12476012 -.00000018 00000-0 99999-4 0 928 2 21217 64.8107 27.9004 0009841 249.3129 110.6209 2.13102555 750 Cosmos 2141 1 21218U 91 25 C 91128.77306240 -.00000018 00000-0 99999-4 0 946 2 21218 64.8032 27.9007 0008384 315.9079 44.0606 2.13103184 745 1991 025F 1 21221U 91 25 F 91120.20162624 -.00000018 00000-0 99999-4 0 744 2 21221 64.8060 28.2111 0003913 286.4928 73.4923 2.13169390 512 GRO 1 21225U 91 27 B 91129.05301139 .00016329 00000-0 39802-3 0 824 2 21225 28.4651 7.3670 0009972 287.6795 72.2714 15.39294014 5167 ASC-2 1 21227U 91 28 A 91127.65662878 -.00000085 00000-0 99999-4 0 873 2 21227 0.2445 214.1639 0002989 275.0519 230.8215 1.00270734 201 1991 028B 1 21228U 91 28 B 91130.05548035 .00000280 00000-0 99999-4 0 876 2 21228 24.0198 264.5464 1174600 282.7839 64.4172 12.46392428 3389 1991 028C 1 21229U 91 28 C 91127.77949154 -.00000055 00000-0 99999-4 0 814 2 21229 22.5309 14.1474 6906635 190.6437 138.8774 2.19694168 559 Cosmos 2142 1 21230U 91 29 A 91129.91611489 .00000120 00000-0 11887-3 0 802 2 21230 82.9569 325.1670 0036757 219.6248 140.2174 13.72305706 3256 1991 029B 1 21231U 91 29 B 91130.09593290 .00000923 00000-0 95988-3 0 853 2 21231 82.9507 324.9520 0034568 199.9342 160.0471 13.74555509 3264 Meteor 3-4 1 21232U 91 30 A 91129.79124632 .00000005 00000-0 00000 0 0 174 2 21232 82.5454 251.6191 0017045 146.6015 213.6181 13.15983364 2079 1991 030B 1 21233U 91 30 B 91128.80094988 .00000066 00000-0 15593-3 0 125 2 21233 82.5451 252.3164 0016803 149.4507 210.7592 13.16155288 1927 1991 030C 1 21234U 91 30 C 91128.80095028 -.00000033 00000-0 -98786-4 0 113 2 21234 82.5472 252.3164 0017350 149.9412 210.2708 13.16154419 1940 1991 031B 1 21244U 91 31 B 91122.58556712 -.00000602 00000-0 00000 0 0 46 2 21244 56.9944 270.0017 0011064 266.3904 107.3542 16.08953839 656 1991 031D 1 21245U 91 31 D 91129.88951603 .01475911 16444-4 63755-3 0 250 2 21245 56.9874 235.0660 0010685 278.2315 81.7628 16.21920708 1835 1991 031E 1 21246U 91 31 E 91128.53556111 .01492247 13979-4 81661-3 0 197 2 21246 56.9861 241.6399 0012348 289.9692 69.5578 16.18851898 1612 1991 031F 1 21247U 91 31 F 91128.54554114 .01245932 11032-2 93957-3 0 116 2 21247 56.9907 241.6938 0015758 294.9757 64.6802 16.14662097 1623 -- Dr TS Kelso Assistant Professor of Space Operations tkelso@blackbird.afit.af.mil Air Force Institute of Technology ------------------------------ End of SPACE Digest V13 #544 *******************