FREQUENTLY ASKED QUESTIONS ON SCI.SPACE/SCI.ASTRO

    INTRODUCTION

    This series of linked messages is periodically posted to the Usenet
groups sci.space and sci.astro in an attempt to provide good answers to
frequently asked questions and other reference material which is worth
preserving. If you have corrections or answers to other frequently asked
questions that you would like included in this posting, send email to
leech@cs.unc.edu (Jon Leech).

    If you don't want to see the FAQ, add 'Frequently Asked Questions' to
your KILL file for this group (if you're not reading this with a newsreader
that can kill articles by subject, you're out of luck).

    The FAQ volume is excessive right now and will gradually being trimmed
down by rewriting, condensing, and moving static information to archive
servers. The FAQ postings are available from the Ames SPACE archive in
ames.arc.nasa.gov:pub/SPACE/FAQ/faq*, along with more information expanding
on topics in the FAQ.

    Good summaries will be accepted in place of the answers given here. The
point of this is to circulate existing information, and avoid rehashing old
answers. Better to build on top than start again. Nothing more depressing
than rehashing old topics for the 100th time. References are provided
because they give more complete information than any short generalization.

    Questions fall into three basic types:

    1) Where do I find some information about space?

    Try your local public library first. The net is not a good place to ask
    for general information. Ask INDIVIDUALS (by email) if you must. There
    are other sources, use them, too. The net is a place for open ended
    discussion.

    2) I have an idea which would improve space flight?

    Hope you aren't surprised, but 9,999 out of 10,000 have usually been
    thought of before. Again, contact a direct individual source for
    evaluation. NASA fields thousands of these each day.

    3) Miscellanous queries.

    These are addressed on a case-by-case basis in the following series of
    FAQ postings.


    SUGGESTIONS FOR BETTER NETIQUETTE

    Read news.announce.newusers if you're on Usenet.
    Minimize cross references, [Do you REALLY NEED to?]
    Edit "Subject:" lines, especially if you're taking a tangent.
    Send mail instead, avoid posting follow ups. (1 mail message worth
        100 posts).
    Internet mail readers: send requests to add/drop to SPACE-REQUEST
        not SPACE.
    Read all available articles before posting a follow-up. (Check all
        references.)
    Cut down attributed articles (leave only the points you're
        responding to; remove signatures and headers). Summarize!
    Put a return address in the body (signature) of your message (mail
        or article), state your institution, etc. Don't assume the
        'reply' function of mailers will work.
    Use absolute dates. Post in a timely way. Don't post what everyone
        will get on TV anyway.
    Some editors and window systems do character count line wrapping:
        keep lines under 80 characters for those using ASCII terminals
        (use carriage returns).


    INDEX TO LINKED POSTINGS

    I've attempted to break the postings up into related areas. There isn't
    a keyword index yet; the following lists the major subject areas in each
    posting. Only those containing astronomy-related material are posted to
    sci.astro (indicated by '*' following the posting number).

    #   Contents

    1*  Introduction
            Suggestions for better netiquette
            Index to linked postings
            Notes on addresses, phone numbers, etc.
            Contributors

    2*  Network resources
            Overview
            Mailing lists
            Periodically updated information
            Warning about non-public networks

    3*  Online (and some offline) sources of images, data, etc.
            Introduction
            Viewing Images
            Online Archives
                NASA Ames
                NASA Astrophysics Data System
                NASA Directory of WAIS Servers
                NASA Jet Propulsion Lab (Mission Information and Images)
                NASA Langley (Technical Reports)
                NASA Spacelink
                National Space Science Data Center
                Space Telescope Science Institute Electronic Info. Service
                Starcat
                Astronomical Databases
                Astronomy Programs
                Orbital Element Sets
                SPACE Digest
            Landsat & NASA Photos
            Planetary Maps
            Cometary Orbits

    4*  Performing calculations and interpreting data formats
            Constants and equations for calculations
            Computing spacecraft orbits and trajectories
            Computing planetary positions
            Computing crater diameters from Earth-impacting asteroids
            Map projections and spherical trignometry
            Performing N-body simulations efficiently
            Interpreting the FITS image format
            Sky (Unix ephemeris program)
            Three-dimensional star/galaxy coordinates

    5*  References on specific areas
            Publishers of space/astronomy material
            Careers in the space industry
            DC-X single-stage to orbit (SSTO) program
            How to name a star after a person
            LLNL "great exploration"
            Lunar Prospector
            Lunar science and activities
            Orbiting Earth satellite histories
            Spacecraft models
            Rocket propulsion
            Spacecraft design
            Esoteric propulsion schemes (solar sails, lasers, fusion...)
            Spy satellites
            Space shuttle computer systems
            SETI computation (signal processing)
            Amateur satellies & weather satellites
            Tides
            Astronomical Mnemonics

    6   Contacting NASA, ESA, and other space agencies/companies
            NASA Centers / Arianespace / CNES / ESA / NASDA / Soyuzkarta /
                Space Camp / Space Commerce Corporation / Spacehab /
                SPOT Image
            Other commercial space businesses

    7   Space shuttle answers, launch schedules, TV coverage
            Shuttle launchings and landings; schedules and how to see them
            Why does the shuttle roll just after liftoff?
            How to receive the NASA TV channel, NASA SELECT
            Amateur radio frequencies for shuttle missions
            Solid Rocket Booster fuel composition

    8   Planetary probes - Historical Missions
            US planetary missions
            Mariner (Venus, Mars, & Mercury flybys and orbiters)
            Pioneer (Moon, Sun, Venus, Jupiter, and Saturn flybys and orbiters)
            Ranger (Lunar lander and impact missions)
            Lunar Orbiter (Lunar surface photography)
            Surveyor (Lunar soft landers)
            Viking (Mars orbiters and landers)
            Voyager (Outer planet flybys)
            Soviet planetary missions
            Soviet Lunar probes
            Soviet Venus probes
            Soviet Mars probes
            Japanese planetary missions
            Planetary mission references

    9   Upcoming planetary probes - missions and schedules
            Cassini
            Galileo
            Magellan
            Mars Observer
            TOPEX/Poseidon
            Ulysses
            Other space science missions
            Proposed missions

    10  Controversial questions
            What happened to the Saturn V plans
            Why data from space missions isn't immediately available
            Risks of nuclear (RTG) power sources for space probes
            Impact of the space shuttle on the ozone layer
            How long can a human live unprotected in space
            How the Challenger astronauts died
            Using the shuttle beyond Low Earth Orbit
            The "Face on Mars"

    11  Space activist/interest/research groups and space publications
            Groups
            Publications
            Undocumented Groups

    12  How to become an astronaut

    13  Orbital and Planetary Launch Services


    NOTES ON ADDRESSES, PHONE NUMBERS, ETC.

    Unless otherwise specified, telephone numbers, addresses, and so on are
    for the United States of America. Non-US readers should remember to add
    the country code for telephone calls, etc.


    CREDITS

    Eugene Miya started a series of linked FAQ postings some years ago which
    inspired (and was largely absorbed into) this set.

    Peter Yee and Ron Baalke have and continue to spend a lot of their own
    time setting up the SPACE archives at NASA Ames and forwarding official
    NASA announcements.

    Many other people have contributed material to this list in the form of
    old postings to sci.space and sci.astro which I've edited. Please let me
    know if corrections need to be made. Contributors I've managed to keep
    track of are:

    ad038@yfn.ysu.edu (Steven Fisk)             - publication refs.
    akerman@bill.phy.queensu.CA (Richard Akerman)   - crater diameters
    alweigel@athena.mit.edu (Lisa Weigel)       - SEDS info
    aoab314@emx.utexas.edu (Srinivas Bettadpur) - tides
    awpaeth@watcgl.waterloo.edu (Alan Wm Paeth) - map projections
    aws@iti.org (Allen W. Sherzer)              - Great Exploration
    baalke@kelvin.jpl.nasa.gov (Ron Baalke)     - planetary probe schedules
    bankst@rata.vuw.ac.nz (Timothy Banks)       - map projections,
        variable star analysis archive
    brosen@pioneer.arc.nasa.gov (Bernie Rosen)  - Space Camp
    bschlesinger@nssdca.gsfc.nasa.gov (Barry Schlesinger)   - FITS format
    cew@venera.isi.edu (Craig E. Ward)          - space group contact info
    chapin@cbnewsc.att.com (Tom Chapin)         - planetary positions
    cunnida@tenet.edu (D. Alan Cunningham)      - NASA Spacelink
    cyamamot@kilroy.Jpl.Nasa.Gov (Cliff Yamamoto) - orbital elements
    datri@convex.com (Anthony Datri)            - PDS/VICAR viewing software
    daver@sjc.mentorg.com (Dave Rickel)         - orbit formulae
    dlbres10@pc.usl.edu (Phil Fraering)         - propulsion
    eder@hsvaic.boeing.com (Dani Eder)          - Saturn V plans, SRBs
    eugene@eos.arc.nasa.gov (Eugene N. Miya)    - introduction,
        NASA contact info, started FAQ postings
    frank.reddy@genie.geis.com (Francis Reddy)  - map projections
    french@isu.isunet.edu (Patrick M. French)   - space group contact info
    g@telesoft.com (Gary Morris)                - amateur radio info
    gaetz@cfa.harvard.edu (Terry Gaetz)         - N-body calculations,
        orbital dynamics
    grandi@noao.edu (Steve Grandi)              - planetary positions
    greer%utd201.dnet%utadnx@utspan.span.nasa.gov (Dale M. Greer)   - constants
    henry@zoo.toronto.edu (Henry Spencer)       - survival in vacuum,
        astronaut how-to, Challenger disaster, publication refs, DC-X
    higgins@fnal.bitnet (William Higgins) - RTGs, publishers, shuttle
        landings, spysats, propulsion, "Face on Mars", and general
        assistance with FAQ upkeep.
    hmueller@cssun.tamu.edu (Hal Mueller)       - map projections,
        orbital dynamics
    jbh55289@uxa.cso.uiuc.edu (Josh Hopkins)    - launch services
    jim@pnet01.cts.com (Jim Bowery)             - propulsion, launch services
    jnhead@pirl.lpl.arizona.edu (James N. Head) - atmospheric scale heights
    jscotti@lpl.arizona.edu (Jim Scotti)        - planetary positions
    kcarroll@zoo.toronto.edu (Kieran A. Carroll)- refs for spacecraft design
    ken@orion.bitnet (Kenneth Ng)               - RTGs
    kjenks@gothamcity.jsc.nasa.gov (Ken Jenks)  - shuttle roll manuever
    klaes@verga.enet.dec.com (Larry Klaes)      - planetary probe history
    leech@cs.unc.edu (Jon Leech)                - crater diameters
    lfa@ssi.com (Lou Adornato)                  - orbital dynamics
    maury.markowitz@egsgate.fidonet.org (Maury Markowitz)   - propulsion
    max@west.darkside.com (Erik Max Francis)    - equations
    mbellon@mcdurb.Urbana.Gould.COM             - N-body calculations
    mcconley@phoenix.Princeton.edu (Marc Wayne Mcconley)    - space careers
    msb@sq.com (Mark Brader)                    - Mariner 1 info.
    mwm@cmu.edu (Mark Maimone)                  - SPACE Digest
    nickw@syma.sussex.ac.uk (Dr. Nick Watkins)  - models, spysats
    ohainaut@eso.org (Olivier R. Hainaut)       - publishers, STARCAT
    oneil@aio.jsc.nasa.gov (Graham O'Neil)      - Lunar Prospector
    panama@cup.portal.com (Kenneth W Durham)    - cometary orbits, IAU
    paul.blase@nss.fidonet.org (Paul Blase)     - propulsion
    pete@denali.gsfc.nasa.gov (Pete Banholzer)  - Clementine
    pjs@plato.jpl.nasa.gov (Peter Scott)        - RTGs
    pschleck@unomaha.edu (Paul W. Schleck)      - AMSAT, ARRL contact info
    rdb@mel.cocam.oz.au (Rodney Brown)          - propulsion refs
    rja7m@phil.cs.virginia.edu (Ran Atkinson)   - FTPable astro. programs
    rjungcla@ihlpb.att.com (R. Michael Jungclas)- models
    seal@leonardo.jpl.nasa.gov (David Seal)     - Cassini mission schedule
    shafer@skipper.dfrf.nasa.gov (Mary Shafer)  - photos, shuttle landings
    smith@sndpit.enet.dec.com (Willie Smith)    - photos
    stephen@gpwd.gp.co.nz (Stephen Dixon)       - shuttle audio frequencies
    sterner@warper.jhuapl.edu (Ray Sterner)     - planetary positions
    stooke@vaxr.sscl.uwo.ca (Phil Stooke)       - planetary maps
    ted_anderson@transarc.com (Ted Anderson)    - propulsion
    terry@astro.as.utexas.edu (Terry Hancock)   - NASA center info
    thorson@typhoon.atmos.coloState.edu (Bill Thorson) - FITS info
    tm2b+@andrew.cmu.edu (Todd L. Masco)        - SPACE Digest
    tom@ssd.csd.harris.com (Tom Horsley)        - refs for algorithms
    veikko.makela@helsinki.fi (Veikko Makela)   - orbital element sets
    Wales.Larrison@ofa123.fidonet.org (Wales Larrison) - groups & publications
    wayne@csri.utoronto.ca (Wayne Hayes)        - constants
    weemba@libra.wistar.upenn.edu (Matthew P Wiener) - Voyager history
    yamada@yscvax.ysc.go.jp (Yoshiro Yamada)    - ISAS/NASDA missions
    yee@ames.arc.nasa.gov (Peter Yee)           - AMES archive server,
        propulsion

    In Net memoriam:
        Ted Flinn

NEXT: FAQ #2/13 - Network Resources