Return-path: X-Andrew-Authenticated-as: 7997;andrew.cmu.edu;Ted Anderson Received: from beak.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 ; Thu, 13 Dec 1990 02:25:47 -0500 (EST) Message-ID: <0bNmnM-00VcJ4PN04t@andrew.cmu.edu> Precedence: junk Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Thu, 13 Dec 1990 02:25:13 -0500 (EST) Subject: SPACE Digest V12 #648 SPACE Digest Volume 12 : Issue 648 Today's Topics: Re: 10th planet? Unsubscribe Re: atmospheric pressure on Mars Re: Translunar/interplanetary shuttle? Re: Good Bye (Quite possibly my last posting from this site) Re: The Space Plane Re: Shuttle Status for 12/06/90 (Forwarded) Re: Translunar/interplanetary shuttle? Is it primordial soup yet? (Galileo Lyman alpha results, minicomets) Shuttle & Galileo Astro-1 Status for 12/07/90 [0815 CST] (Forwarded) NASA Headline News for 12/07/90 (Forwarded) galileo & the shuttle Administrivia: Submissions to the SPACE Digest/sci.space should be mailed to space+@andrew.cmu.edu. Other mail, esp. [un]subscription notices, should be sent to space-request+@andrew.cmu.edu, or, if urgent, to tm2b+@andrew.cmu.edu ---------------------------------------------------------------------- Date: 6 Dec 90 15:57:56 GMT From: usc!wuarchive!rex!rouge!dlbres10@ucsd.edu (Fraering Philip) Subject: Re: 10th planet? Vulcan was supposed to be inboard of Mercury; its existance was postulated when we knew less about gravity than we do now. General Relativity has let us account for discrepancies of Mercury's orbit without another planet. In the outer solar system, however, there may be an undiscovered planet; a good source for a history of the argument can be found in the last 2 or 3 years of Sky and Telescope, I imagine... Phil ------------------------------ Date: Thu, 06 Dec 90 09:13:54 MST From: Janet Lewis Subject: Unsubscribe X-Acknowledge-To: Please remove my name and address from your mailing list. Thank you. Janet Lewis/iejml@asuacad Geology Department Arizona State University Tempe, AZ 85287-1404 602/965-9433 ------------------------------ Date: 6 Dec 90 00:39:47 GMT From: ksr!clj%ksr.com@uunet.uu.net (Chris Jones) Subject: Re: atmospheric pressure on Mars In article <00940C01.BD715980@CCVAX1.NCSU.EDU>, seward@CCVAX1 (Bill Seward) writes: >Here is a question that occured to me for a really silly reason: > >I remember reading, way back somewhere, that a human could survive at >the Martian equator during the summer with only a respirator. Of course, >this was pre-Viking. > >So the question is, what is the atmospheric pressure of Mars at the surface The surface pressure of Mars varies from 8.9 millibars (in the Hellas basin) to 1-2 millibars at the summits of the large volcanoes. These are pressure suit conditions. (source, p. 126 of _Race to Mars_ _The ITN Mars Flight Atlas_). -- Chris Jones clj@ksr.com {world,uunet,harvard}!ksr!clj ------------------------------ Date: 6 Dec 90 14:43:32 GMT From: pilchuck!seahcx!phred!petej@uunet.uu.net (Pete Jarvis) Subject: Re: Translunar/interplanetary shuttle? In article <7089.275a4245@abo.fi> mlindroos@abo.fi writes: > >As for the problem with the main engines (we've been told here that they are >not restartable), would it be possible to use the extra fuel for the OMS >engines instead...? (my guess is it won't be, anyway). >MARCU$ The OMS engines use hypergolic fuel (nitrogen tetroxide and monomethyl hydrazine, I believe). The only current way to add to the OMS fuel supply is to install what is called an "OMS kit". There are provisions for extra fuels tanks. The electrical and plumbing are already available for this. There are no current plans to use the "kit" at this time. Peter Jarvis....... ------------------------------ Date: 7 Dec 90 03:53:09 GMT From: sdd.hp.com!uakari.primate.wisc.edu!crdgw1!sixhub!davidsen@ucsd.edu (Wm E. Davidsen Jr) Subject: Re: Good Bye (Quite possibly my last posting from this site) In article <1990Dec6.051731.23161@rice.edu> jsd@boreal.rice.edu (Shawn Joel Dube) writes: | This brings up a question. How many people subscribe to this | newsgroup??? I'm curious to know. Why not look at the distributions posted every month in news.somthing? -- bill davidsen - davidsen@sixhub.uucp (uunet!crdgw1!sixhub!davidsen) sysop *IX BBS and Public Access UNIX moderator of comp.binaries.ibm.pc and 80386 mailing list "Stupidity, like virtue, is its own reward" -me ------------------------------ Date: 6 Dec 90 19:53:03 GMT From: mojo!SYSMGR%KING.ENG.UMD.EDU@mimsy.umd.edu (Doug Mohney) Subject: Re: The Space Plane In article <288500016@trsvax>, jack@trsvax.UUCP writes: > >The NASP has been designated the X-30 not just in honor of the X-vehicles, >but because it is the latest experimental research aircraft. >The idea is that the X-30 will acheive and cruise at hypersonic speeds >through the use of air-breathing scramjet engines, and with the assist >of a small (50,000 - 70,000 lbs thrust) internal rocket will enter LEO. The AERO profs here at Maryland (well, one of them) was really disappointed with the airframe. Of course, Dr. Lewis was hoping for a waveglider :-)... He was more happy that the Germans are building a test plane for Saenger which looked like a waveglider. %%%%% Signature v2.0 %%%%% Doug Mohney, Operations Manager, CAD Lab/ME, Univ. of Maryland College Park * If Apple's pricing strategy had been as exciting as their commercials, * * Windows 3.0 would have never been written * ------------------------------ Date: 7 Dec 90 07:30:19 GMT From: swrinde!zaphod.mps.ohio-state.edu!julius.cs.uiuc.edu!ux1.cso.uiuc.edu!uxa.cso.uiuc.edu!sfn20715@ucsd.edu (Steve "il-Manhous" Norton) Subject: Re: Shuttle Status for 12/06/90 (Forwarded) yee@trident.arc.nasa.gov (Peter E. Yee) writes: > KSC SHUTTLE STATUS REPORT - Thursday, Dec. 6, 1990 9:30 a.m. > five days of turnaround operations, the orbiter will be ferried > back to Florida. The 747 shuttle carrier aircraft/orbiter will be > making several refueling stops across the country because of the > extra weight due to Astro. So here's the $6e6 question for the day: What's going to happen to Astro when it gets back to Florida? (Aside from some scientists cursing and screaming at the IPS electronics for a while :-) ) Perhaps some analysis similar to what LDEF went through? Going to break it down and sell the parts to astronomers for future telescopes? (Astro-2 and Astro-3 have definitely been canned, right?) ------------------------------ Date: 7 Dec 90 06:13:38 GMT From: usc!chaph.usc.edu!localhost!crockwel@ucsd.edu Subject: Re: Translunar/interplanetary shuttle? In article <5002@bwdls58.UUCP> hwt@bwdlh490.BNR.CA (Henry Troup) writes: In article <7633@eos.arc.nasa.gov>, millard@eos.arc.nasa.gov (Millard Edgerton) writes: |>If the engines(mains) are not restartable, HOW DO THEY FIRE TO DE-ORBIT? |> |>THINK ABOUT IT! This is either a joke or a forgery, right? This guy calims to be from NASA Ames, but doesn't know how the shuttle work? Oy vey! yo! not everyone who works for a company knows everything about a company. you think every secretary in the air force knows how the stealth bomber works??? i know one person who works for the air force who claims that they didn't have a plane nick-named 'blackbird'. this is no indication that she didn't work there. c. -- "Come on and lay with me / Come on and lie to me" ------------------------------ Date: 7 Dec 90 16:49:24 GMT From: rex!rouge!pc.usl.edu!dlbres10@ames.arc.nasa.gov (Fraering Philip) Subject: Is it primordial soup yet? (Galileo Lyman alpha results, minicomets) The other day in a bookstore I saw a book by Louis Frank of the minicomet theory fame called _The Big Splash_ in which he said that Galileo would be performing some observations into the existance and nature of the mini- comets, but that we wouldn't get ahold of the results until the data was played back during Earth flyby... (or was that somewhere else?) Anyway, do the results coming back now show any brightening in the lyman alpha hydrogen emission line? Thanks... Phil Fraering dlbres10@pc.usl.edu P.S.: If these things exist, is there any useful purpose for them? Phil ------------------------------ Date: 7 Dec 90 22:41:45 GMT From: ub.d.umn.edu!jbovitz@rutgers.edu (Jeffrey Bovitz) Subject: Shuttle & Galileo When Galileo does it's Earth fly-by on 8 December, will the Shuttle be able to see it? I'm assuming the Shuttle will be up on that day, but if it isn't, don't flame me, OK? Thanx! (-: By the way, I am actually Chris Bovitz. I'm using my bro's account to post this thing. If anyone out there know how I can post w/o Pnews, let me know. I am moonunit@meteor.wisc.edu. Thanx! ------------------------------ Date: 8 Dec 90 05:15:58 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Subject: Astro-1 Status for 12/07/90 [0815 CST] (Forwarded) Astro 1 Mission Report #30 08:15 a.m. CST, December 7, 1990 5/07:25 MET Spacelab Mission Operations Control Marshall Space Flight Center "This is the proudest moment of the mission to date!" exclaimed Astro Assistant Mission Manager Stu Clifton as he came out of a shift briefing. "Following the loss of the Data Display System, Astro has recovered substantially in less than 22 hours. All experiments are recording excellent data." At approximately 5:35 a.m. CST, all three ultraviolet instruments got scientific data on a target known by astronomers as Q1821. This radio-quiet quasar is one of the most luminous objects in the universe, brighter than many galaxies combined. According to HUT Assistant Project Scientist Gerard Kriss: "It is thought that Q1821's enormous radiation emission is powered by matter falling into a black hole in its center -- an area more than a hundred million times the mass of the Sun. Gas stripped from nearby stars in the host galaxy of this quasar should get hot as it falls into the black hole, forming a swirling disk, much like water draining down a sink. Astro scientists are looking for the characteristic radiation that would be emitted by this hot gas. This would provide some of the first hard evidence for the existence of such super-massive black holes." When asked to comment about the status of the mission, Project Scientist Geoff Clayton eagerly replied: "I am really happy that we are back observing! Twelve hours ago we weren't really sure what was going to happen. But we got back to observing much faster than we thought we were going to, and we really feel like it's all gravy now. We are observing most of the time now, and we're doing a much simpler operation that will get better and better as we continue observing in this mode." ------------------------------ Date: 8 Dec 90 05:10:19 GMT From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov (Peter E. Yee) Subject: NASA Headline News for 12/07/90 (Forwarded) Headline News Internal Communications Branch (P-2) NASA Headquarters Friday, December 7, 1990 Audio Service: 202 / 755-1788 This is NASA Headline News for Friday, December 7, 1990 The Space Classroom became a reality today, as the Astro-1 science crew conducted lessons from space this morning. The lesson, entitled "Assignment: The Stars", is part of a NASA effort to bring the excitement of real space science to students and teachers and to encourage interest in mathematics, science and technology. Astronauts Samuel T. Durrance and Jeffrey A. Hoffman, conducted the lesson from orbit which focused on the invisible and the visible universe -- the electromagnetic spectrum and how Astro-1 extends our vision of the many kinds of celestial bodies and events. Astronauts Ronald Parise and Robert Parker joined in the second session, the question and answer period of the program. Students and teachers in classrooms at Marshall and Goddard Space Flight Centers received a ground-based lesson from teacher Karen Widenhofer from Marshall following the initial session from Columbia. Back in business, the Astro-1 observatory aboard the Space Shuttle Columbia resumed its astronomical activities last night, following the loss of a computer terminal yesterday. The efforts of the Columbia crew and ground teams at Marshall and Johnson Space Flight Centers transformed what look like a dismal situation for the Astro-1 mission, into near routine science gathering. A procedure for commanding the three ultraviolet telescopes, and taking observations which integrate operations at JSC, MSFC and aboard Columbia, came together more quickly than anticipated, and a "good lock" was made on Supernova 1987A shortly before 6:00 pm yesterday. The team worked through the night to refine the operation, and in the early morning hours today, a radio-quiet quasar, Q1821, was targeted and observed in minimum time. Prime telescope for observations last night was the Ultraviolet Imaging Telescope, which observed NGC 1633. After solving earlier alignment problems, the Broad Band X-ray telescope came on line to make two observations of NGC 1399 in the constellation Fornax, Q1821+64, and Abell 2256, a spiral-poor galaxy cluster. Gaining a gravitational boost on its six-year journey to Jupiter, the Galileo spacecraft will zip by Earth tomorrow, some 680 miles from its surface. It will reach its closest approach at about 3:35 Eastern time. Galileo's next fly-by of Earth is in early December, 1992, the last gravity assist required to hurl it to Jupiter. Following tomorrow's fly-by, Galileo will pass within 600 miles of the asteroid Gaspra in the autumn of 1991. Here's the broadcast schedule for Public Affairs events on NASA Select TV. All times are Eastern. **indicates a live program. Friday, 12/7/90 Mission coverage of the STS-35/Astro-1 flight will continue live throughout the week 12:45 pm Mission Science Briefing from MSFC 3:30 pm "Today in Space" with Dr. Frank Six 5:00 pm Change of Shift Flight Director Briefing from JSC 6:00 pm Mission Manager Briefing from MSFC 8:00 pm Science TV from Astro-1 8:49 pm Flight deck activities from Columbia 9:41 pm Science TV from Astro-1 11:37 pm Science TV from Astro-1 Saturday, 12/8/90 1:00 am Change of Shift Flight Director Briefing from JSC 1:30 am Replay of flight deck activities 2:22 am Science TV from Astro-1 4:23 am Science TV from Astro-1 7:31 am Science TV from Astro-1 9:00 am Change of Shift Flight Director Briefing from JSC 10:18 am Science TV from Astro-1 10:30 am Mission Scientist Briefing from MSFC 11:19 am Science TV from Astro-1 12:06 pm Science TV from Astro-1 12:24 pm Flight deck activities from Columbia 2:00 pm Galileo at Earth report from JPL 2:30 pm Galileo at Earth report from JPL 3:00 pm Galileo at Earth-closest approach 4:00 pm "Today in Space" with Dr. Frank Six 4:30 pm Galileo at Earth Press Conference 5:30 pm Change of Shift Flight Director Briefing from JSC 6:00 pm Galileo at Earth Wrap-Up All events and times may change without notice. This report is filed daily, Monday through Friday, at 12:00 pm, EST. It is a service of Internal Communications Branch at NASA Headquarters. Contact: CREDMOND on NASAmail or at 202/453-8425. NASA Select TV: Satcom F2R, Transponder 13, C-Band, 72 degrees West Longitude, Audio 6.8, Frequency 3960 MHz. ------------------------------ Date: 7 Dec 90 15:03:43 GMT From: elroy.jpl.nasa.gov!usc!zaphod.mps.ohio-state.edu!magnus.ircc.ohio-state.edu!ephillip%magnus.ircc.ohio-state.edu@ames.arc.nasa.gov (Earl W Phillips) Subject: galileo & the shuttle Well, now that we've got the shuttle up there, and the Galileo spacecraft speeing toward Earth, what's the chances that the shuttle personnel will be able to directly view the Galileo and/or get some pix of its approach? Also, aren't there some personnel in Mir at this time? What are their chances of viewing the Galileo? Just wonderin'! ephillip@magnus.ircc.ohio-state.edu -EP- ------------------------------ End of SPACE Digest V12 #648 *******************