61. RATS Finland place, and ftp//ftp.cdrom.com/pub/algorithms and Linux magazine http//www.linuxmag.com; Linux documentation see DSP links above and Radio astronomy, EME and http://www.rats.fi/english/RATSlink.html

Index to links Links to ... Amateur radio organisations and telecommunications authorities http://www.hamsearch.com - a non-profit search engine for amateur radio ARRL (USA): http://www.arrl.org European Radiocommunications Office (Denmark): http://www.ero.dk/INDEX.HTM - licencing in EU countries FCC (USA): http://www.fcc.gov International Amateur Radio Union (IARU): http://www.iaru.org International Telecommunications Union (ITU) (ex. CCIR and CCITT): http://www.itu.ch RSGB (UK): http://www.rsgb.org.uk SAREX (USA): http://garc.gsfc.nasa.gov/sarex/sarex_backup.html SRAL (Finland): http://www.sral.fi Wireless Intitute of Australia (WIA): http://www.wia.org.au, this site also contains links to the Divisional web pages. Amateur radio CDROMs ARRL magazines on CDROMs: http://www.arrl.org Buckmaster Publishing: http://www.buck.com/hammain.html RSGB CDROMs: http://www.rsgb.org.uk/books/software.htm#cd96 Simtel software: ftp://ftp.cdrom.com/pub/simtelnet/msdos/hamradio (Walnut Creek site) TAPR CDROMs: http://www.tapr.org

62. Caryl Bryer Fallert - Publications p.15; HEMISPHERES United Airlines Inflight mag. June, p. 38; STARDATE (astronomy magazine) · 1990 EXPRESSIONS; THE CONTEMPORARY QUILT · 1987 Schiffer pub. http://www.bryerpatch.com/about/publications.htm

Home Internet Store Main Menu Welcome ... Email Updated Home Main Menu Page Artist's Statement ... Email All of Caryl's quilts are original designs, and are made with her own hand dyed fabrics. Many of these fabrics are available from our Secure Internet Store Check them out!!!! About Caryl Menu About Caryl Main Menu Biography Artists Statement Publications Solo Exhibitons Small Group Exhibitions Commissions Quilts for Sale Musuem Collections Public Collections Corporate Collections Private Collections Home Bryerpatch Studio Menu Main Menu Welcome Gallery of Quilts Quilts for Sale About Caryl Internet Store Workshops Frequently Asked Questions Contact Us Links Bubble Jet Set Fabric Printing Information Exhibits Home Free Information Publications in which Caryl Bryer Fallert's works have appeared Books: English language Books: Japanese language USA: Magazines and Periodicals International: Magazines and Periodicals ... Other Caryl Bryer Fallert: A Spectrum of Quilts 1983-1995: 1996: AQS Books, 112 pages (ISBN: 0-89145-874-3) (

63. SKYWATCHER'S DIARY: April 1997 Each month, the Department of Physics and astronomy at Michigan State University also ftp//www.pa.msu.edu/pub/swd 3 deg upper left of comet, note 2ndmag Algol http://www.pa.msu.edu/abrams/SkyWatchersDiary/1997/SWD_9704.2.html

Abrams Planetarium SKYWATCHER'S DIARY: April 1997 To the reader The Skywatcher's Diary for April 1997 has been prepared by Robert C. Victor. Sometimes you can see next month's in advance by looking in our archives. Credit to Abrams Planetarium Department of Physics and Astronomy at Michigan State University , together with mention of our Sky Calendar , would be appreciated. A sample current issue of Sky Calendar http://www.pa.msu.edu/abrams/apr97skycal.html If you would like a printed sample of the April issue, send a long, self- addressed stamped envelope to: April Sky Calendar Abrams Planetarium Michigan State University East Lansing, MI 48824 Each month, the Department of Physics and Astronomy at Michigan State University also makes Skywatcher's Diary http://www.pa.msu.edu/abrams/diary.html The Skywatcher's Diary is also available via anonymous ftp at: www.pa.msu.edu in the directory /pub/swd ftp://www.pa.msu.edu/pub/swd/ Comet Hale-Bopp in evening sky: Best dates for viewing the comet right at nightfall, with Moon absent: April 1-7. Nearly as good: April 8- 14, with Moon waxing from thin crescent to half full. By nice coincidence for most of U.S., the comet attains peak altitude about 20- 25 degrees up in NW to WNW at nightfall in first or second week of April. For more information, try some of our favorite Hale-Bopp Web sites:

64. Abrams Planetarium SKYWATCHER S DIARY May 1997 of Physics and astronomy at Michigan a in the directory /pub/swd ***** Comet about 9 degrees below 2nd mag. http://www.pa.msu.edu/ftp/pub/swd/1997/SWD_9705_ascii

65. Distant EKOs #19 to ftp//ftp.gps.caltech.edu/pub/chad/large derive a new value for the nuclear magnitude, mag. published in astronomy Astrophysics, 376, 310 (2001 September). http://www.boulder.swri.edu/ekonews/issues/past/n019/html/

Contents Abstracts of 4 Accepted Papers Abstracts of 2 Other Papers of Interest Outline of 1 Book Newsletter Information As was done with Varuna, 2001 KX76 has been found in archival images. The seven oppositions dating back to 1982 give it a low enough orbital uncertainty to qualify it for numbering. Its absolute magnitude ( H =3.2) is now also brighter based on those and new observations, giving an estimated diameter of 1200 to 1400 km and making it now the largest minor planet, bigger than Ceres or Charon. See M.P.E.C. 2001-P28: http://cfa-www.harvard.edu/mpec/K01/K01P28.html and story at http://www.cnn.com/2001/TECH/space/08/24/minor.planet/index.html http://www.eso.org/outreach/press-rel/pr-2001/phot-27-01.html F. Marchis and J. Berthier have calculated appulse events which involve bright stars from Tycho-2 catalogue ( m V http://astron.berkeley.edu/~fmarchis/Science/TNOs_Appulse/ There were 17 new TNO discoveries announced since the previous issue of the Distant EKOs Newsletter: and 2 new Centaur/SDO discoveries: Reclassified objects: 2000 PL30 (TNO SDO) 2000 PJ30 (TNO SDO) 2000 OB51 (SDO TNO) 2001 KD77 (SDO TNO) Object with new identification: Objects recently assigned numbers: Current number of Centaurs/SDOs: 79 The Distant EKOs Newsletter and webpage celebrate their third anniversary this month. The newsletter has 348 subscribers from 31 countries, and the web page has had over 11,200 hits.

66. Subject Title List - Education 01 PA HM 13.00 0395926882 BEST AMERICAN mag WRITING 2003 ed) LITTLE B 50.00 0316082775 Bedroom astronomy KLUTZ ENT My Freshman Manual CREAT pub 6.95 0964430207 http://www.thedistributors.com/inven/subject/educat.htm

Education Titles Back to Inventory by Subjects Back to the distributors Home Page ... the distributors

67. Murli's Links Daily Datacomm Datamation CIO Binary Thoughts The Tech mag . Ziff Davis ZDnet ZDeducation Ziff-Davis pub. Co. Science Metaresearch-astronomy. http://cispom.boisestate.edu/murli/links/

Boise State University College of Business CIS/PM Department General General News Tech IS ... www.murli.com BSU BSU Directory BSU email addresses BSU Enrollment Boise, Idaho City of Boise Boise Convention Boise.com State of Idaho ... Kickstand Search Google Google Groups Top 50 US sites Google Zeitgeist ... HOTBOT Search India Jadoo ASKINDIA Know About India INDOlink ... Asia Inc. Reference English Webster Dictionary OED ONLINE! ... Wordnet French: Translation: Babelfish Lost in Translation Countries: China: China map Linguistic Groups World Population World Population Clock ... Disenchanted Dictionary Science Treasure Trove of Science Biology Ref Ramanujan Journal Isaac Asimov ... British Medical Journal Tech Reference Webopedia whatis.com TechEncyclopedia Learn the net ... Jargon Scout Fun with words Fun with words Verbivore Word Play Mike Keith ... Anu Garg Home Anagrams: Anagram Server Anagram Genius Anagrammy Awards Ambigrams: Ambigram Ambigram Matic Palindromes: Jim Kalb Neil's list Ernie's Zo's ... Palindrome Parade Palindromist: Palindromist Mag Political Political Polisat Other: Palindromic URLs Palindromic DNA Game: Once upon a p'drome Library of Congress The Quotations Page GUTENBERG Fun with Math Recreational Math: Rec Math links Camel Cut the Knot PopMath Martin Gardner: Interview MG Books MG Books 2 Vis. BS

68. Space FAQ 05/13 - References See the back pages of astronomy or other amateur astronomy publications for 2, Mar 84 (EML 2) Vol mag22, No. gov), is at ftp//ftp.cs.unc.edu/pub/users/leech http://www.faqs.org/faqs/space/references/

Usenet FAQs Search Web FAQs Documents ... RFC Index Space FAQ 05/13 - References From: leech@cs.unc.edu (Jon Leech) Newsgroups: sci.space.tech sci.space.science sci.astro thompson@lpi.jsc.nasa.gov ... http://gargravarr.cc.utexas.edu/delta-clipper/title.html A SSRT news mailing list, which echoes additions to this archive site, can be subscribed to by sending email to " listserv@zimbazi.cc.utexas.edu " with a first line containing "subscribe ssrt-news". Contact Chris W. Johnson ( chrisj@bongo.cc.utexas.edu ftp://ftp.cs.unc.edu/pub/users/leech/FAQ/Satellites.gz SPACECRAFT MODELS References to plans, kits, building, and other information can be found in the Rec.Models.Rockets FAQ in the rec.models.rockets newsgroup. Greg Bollendonk ( gregb@gemini.den.mmc.com ) has provided a list of spacecraft models, current prices, mail order sources, and periodicals and literature in the field. This is available at ftp://ftp.cs.unc.edu/pub/users/leech/FAQ/ModelCatalog.gz jwertz@netcom.com ). Hardback may be ordered from Kluwer (see publisher addresses above), paperback from Microcosm ($39.50) ESOTERIC PROPULSION SCHEMES (SOLAR SAILS, LASERS, FUSION...) Dani Eder ( eder@hsvaic.hv.boeing.com

69. Useful Links Those that do work are pretty good http//www.clark.net/pub/rbenn/isp.html. Telecommunications http//www.telecomsmag.com/. Miscellaneous. astronomy http://campus.champlain.edu/faculty/whitmore/htm/Useful_Links.htm

Useful Links These links have been useful in telecommunications and other technical classes at Champlain College. The sites are grouped by general subject and there is some overlap. Some sites will appear in more than one category because of overlapping functions. Many thanks to the students, colleagues and friends who have made tipped me off to good sites. All the help is appreciated! Please let me know if you find any errors or dead links. If you have any suggestions for additional links just send an email to me at Whitmore@Champlain.edu Thanks for visiting! Dave Whitmore Table of Contents Essays and Tutorials Telecommunications: Broadband including xDSL and Cable Modems Company Links ... Organs Essays and Tutorials 3COM: Free Online Tutorials: http://www.3com.com/corpinfo/en_US/technology/index.jsp Cisco tutorials and FAQs: http://www.cisco.com/warp/public/779/smbiz/resource_net/tools/ Cisco Internetworking Handbook: http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/ CNET: Miscellaneous help on computer and data communication topics: http://www.help.com/

70. Bookmarks For Stuart Vogel Popular PC-Games Directory of /pub/sun-faq Page NRAO Home Page UMD astronomy Department Home Setlists Bruce Springsteen - Teamster mag Feature Backstreets http://www.astro.umd.edu/~vogel/bookmarks.old

Bookmarks for Stuart Vogel AAS Membership Directory BIMA Home Page Department of Astronomy - University of Maryland at College Park Astro library book search ... Astrophysics Astronomy Satellite Visibility - Home Page Recent IAUCs NED Satellite Visibility - Home Page ... Fu-Kwun Hwang's Personal Home Page WWW/Internet Services HTML Global Network Navigator Home Page WebWorld InterAccess's Web World NetBoy Internet Tools Summary ... This Week's Sky at a Glance Ap J Letter articles Cars CO-H Conversion Factor Circumstellar Dust Disk around DO Tau Spiral Structure in NGC 4258 NGC 1333/IRAS 4A NGC 1333/IRAS 4A ... Non-LTE Effects in Ammonia Databases Daniel's Space Image Archive The AstroWeb Consortium Journals Annual Reviews Inc. Miscellaneous Keck/HIRES Sky Line Atlas Home Page Patrick Shopbell GCNews, Galactic Center Newsletter New Astronomy ... American Astronomical Society Home Page NASA STScI/HST Public Information NASA/Goddard Space Flight Center NASA/Jet Propulsion Laboratory Home Page NASA Information Services via World Wide Web ... Space Telescope Science Institute Library Telescopes BIMA Home Page BIMA DATABASE QUERY PAGE Correlation Modes IRAM ... Can 51 Peg Doppler variations be due to Non-Radial Pulsations ?

71. Bookmarks For Paolo Ciafaloni Das neue Windsurf und Wellenreit-mag im Internet of /pub/doom2 Directory of /pub/pc/doom General Information 1996 Physics and astronomy Classification Scheme http://www.fisica.unile.it/~ciafalon/bookmarks.html

Bookmarks for Paolo Ciafaloni WORKSHOPS International Workshop on Linear Colliders LC Workshop (Sitges) les Houches Workshops 99/ Intro Page Cuba ... Dubna CONFERENCES Moriond Electroweak BEAUTY '99 SUSY 99 Homepage 1999 Physics in Collision Home Page ... Lepton-Photon '99 Symposium CULTURE A Web of On-line Dictionaries English CCSD Online travlang's Translating Dictionaries Cobuild Home Page Hypertext Webster Gateway at UCSD ... Galleria degli Uffizi TELEPHONE Net2Phone - Welcome Connected PC VocalTec Home Page Welcome To NetSpeak PRESS, BOOKS ... BOOKS Books from the Eagle Electronic Bookshop Corporate Book Resources Blackwell's Corporate Page Welcome to Amazon.com Books! Earth's Biggest Bookstore ... HEFFERS OF CAMBRIDGE NEWSPAPERS l'ANSA EL PAIS DIGITAL Multisoft.edicola - Homepage WebTime ... la Repubblica TOURISM Currency Converter Personal Toolbar Folder POSTDOCS Physics Job Announcements by thread ADI Post Dottorato Associazione Dottorandi e Dottori di Ricerca Italiani SNS - Classe di Scienze: Selezioni e Concorsi pubblici ... Postdoc in particle physics phenomenology @ Uppsala University INTERNET TOOLS Answers.com - Question

72. NCHALADA LIX eg, just twofifths of an arc-minute across, but with a surface brightness of nearly mag. Entire number of Vistas in astronomy 29 (1986). 270-) first pub. http://nchalada.org/archive/NCHALADA_LIX.html

NCHALADA Home page NCHALADA Archive Please join two interesting discussions on historical astronomy Saturday, January 5, 2002 NCHALADA LIX Northern California Historical Astronomy Luncheon and Discussion Association http://www.nchalada.org/ http://www.chabotspace.org/visit/directions.asp in the Board Room, Dellums Building (West end) (Parking free in the overflow lot or $4 in the structure) Morning discussion, 10 - 12:30: Ancient Greek Astronomy Chair: John Dillon Curator of Natural Science, Randall Museum Lunch at a local restaurant, then a brief business meeting. Afternoon discussion, 2 - 5 PM: History of Spectroscopy Chair: Andrew Bell Please bring yummy munchies. For further information, contact: Norm Sperling EVERYTHING IN THE UNIVERSE 413 Poinsettia Avenue San Mateo, California 94403 nsperling@california.com http://www.everythingintheuniv.com/ Sessions are always discussions, never lectures. Your contributions are eagerly welcomed. Please join 2 interesting discussions about historical astronomy, Saturday, January 5, 2002. NCHALADA LIX: Northern California Historical Astronomy Luncheon and Discussion Association. www.nchalada.org

73. Michael Werneburg's Bookmarks the Moon Solar System Live AA ES astronomy - Index The Network Environment ftp//info.cert.org/pub es/CA LCS Theory of Computation Group - mag ONLINE - FAMA http://www.etherlabs.net/m.werneburg/fun/bookmarks.shtml

michael werneburg me Me Hobbies Professional ... etherlabs.net random words If you want to know what god thinks of money, just look at the people he gave it to. -Dorothy Parker Bookmarks Index Interesting Development SysAdmin Miscellany TechnoGate http://home.mho.net/cbrooks/frames.html THE HEADACHE DOCTOR toronto.com - All You Need To Know About T.O. ... Internet2: Internet2 Home Page Interesting Financial Indices Financial Data Finder Financial Internet Sites Alphabetical Business List BS CANOE.CA Welcome to Slingshot (Financial BS) The Wealth Plan Banks Some Info about SmartBank Introduction - Bank of Canada Home Page Royal Bank Source of: https://www1.royalbank.com/cgi-bin/rbaccess/rbunxcgi Royal Direct - Sign In Welcome to Bank of Montreal Mutual Funds Mutual Fund Companies Welcome to Royal Mutual Funds Admax Regent Group of Funds Mackenzie Financial Corporation ... 724 Solutions Hobbies Fractals Lifesmith Classic Fractals Gallery 1988-1999 Sprott's Fractal Gallery Noel Gallery Complexity and Self-Organisation ... Watermarks : Quick Basic Source Code Astronomy Welcome to the Planets Version 1.5

74. Prime Focus mag/ n 4.0/4.0. making this HORIZONS system of potential interest to histori ans of astronomy. (Postscri pt file) ftp//ss d.jpl.nasa.gov/pub/ssd/ Horizons_doc http://www.trivalleystargazers.org/newsletter/1998/may98pf.html

Prime Focus The newsletter of the Tri-Valley Stargazers May 1998. Translated (roughly) from postscript into HTML for your browsing and downloading pleasure. TVS presents What: Lunar Prospec tor mission upda te Where: Unitarian Universalist Church in Livermore, 1893 N. Vasco Rd. When: May 8, 1998 Conversation, 7:00 PM Program begins, 7:30 PM Who: You and your family Alan Binder, principal investigator IN THI S ISSUE May general meeting Club news and notes What's Up Comet Comme nts ASP/Project ASTRO JPL epheme rides Membership/renewal At this early point in the mission and its data analysis, this range may be in error by as much as an order of magnitude, because Luna r Prospector is the first interplanetary mission to employ a neutron spectroscopy tool to measure water. No previous precis e models exis t to describe exactly how neutrons behave on the lunar surface. Binder believes that, "the answer is in the data... it's just a matter of finding out what it is." Lunar Prospector's overall mission places scientific exploration of the Moon as its highest priority. Researchers expect that the mission will contribute major new understandings of the origin, evolution, and current state of the Moon. Join us at the May meeting to hear the latest from the project's pri ncipal investigator.

75. FAQ9: Recommendations For Beginning Astronomers The mag 5 Star Atlas from Edmund Scientific. wonderful indepth introductions to the field of astronomy. http://www.corvus.com/faq/aa01faq9.htm

The American Association of Amateur Astronomers Visit Home Up Explore AAAA Table of Contents ... Search AAAA A stro M ax The AAAA Online Store Serving the Amateur Astronomy Community ONLINE since 1996 Select AstroMax Catalog Observing Aids Planispheres Sky Atlas First Light Kit Astronomer's Journal The Universe DVD HST CD-Rom Binocular Kit Telescope Kit Astele 70 RASC Observer's Handbook Astronomical Companion Astronomical Calendar 2003 Moon Calendars AL Programs Mouse Pads Birthday Calendars Astro Puzzle Feedback AAAA Homepage The American Association of Amateur Astronomers Home Search AAAA Select AAAA AAAA Universe AstroMax Press Releases Join the AAAA Control Center Member Reports Astronomy Links Observing Programs FAQ Constellations Planets Universe Guide Arp CCD Images Partnerships AAAA Newsletter AAAA Mission Select AstroMax Catalog Binocular Kit Telescope Kit Astele 70 Astele 95 Observing Aids Ottewell Calendar Astro Companion First Light Kit Sky Atlas Planisphere Deen Pub Feedback AAAA Home The AAAA Universe Start Here AstroMax The AAAA Online Store Membership Join the AAAA Control Center Site Table of Contents AAAA Members Reports and Activities FAQ Frequently Asked Questions Links to Astronomy Sites Fight Light Pollution Be Part of the Solution Observing Programs from the Astronomical League News from the AAAA Press Releases and News Updates An Overview of Astronomy A Concise Guide to the Universe

76. Michel T. Talbot's Bookmarks Net resources for Rubik s Cube mag s 3x3 Rubik s and EconomyCompaniesComputersSoftwareScientificAstronomy. ARTFL Project Directory of /pub/etext/gutenberg http://www.nbi.dk/~konstant/homepage/mtalbot-bookmarc.html

Michel T. Talbot's Bookmarks Alta Vista (Fast) Search Yahoo! ALIWEB Search Form All-in-One Search Page CUI W3 Catalog (Uses Perl RE's) ... Yahoo Search Math General Math Yahoo - Science:Mathematics Yahoo! - Science:Mathematics:Institutes A-L (Dover Publications) Mathematics Analysis Webnotes WELCOME CAMEL: The Information Services of the Canadian Mathematical Community / Les services d'information de la communauté mathématique du Canada CSC Mathematical Topics ... Julie C. Mitchell's Home Page M Math Forum Home Page Mathematical Quotation Server Mathematical Review 1991 Subject Classification Mathematics ... MathSearch search a collection of mathematical Web material N-Z On-line glossary of technical notation On-line Mathematics Dictionary Organic Mathematics: the Proceedings SuperGlossary (Treasure Trove of Math) ... Welcome to Hypatia News Groups and Lists MathGroup Mail Archive Finite Elements Finite Element Resources Internet Finite Element Resources Geometry General Geometry A Gallery of Interactive On-Line Geometry Beiträge zur Algebra und Geometrie Homepage conformal Geometry and the Imagination in Minneapolis ... Xah: Visual Dictionary of Special Plane Curves Computational Geometry voronoi abstracts Abstract: Incremental Computation of Voronoi Diagrams of Planar Shapes ETH Zurich / Computer Science / Theoretical CS / Widmayer / Research Projects Geometry in Action (Voronoi Diagrams) http://www.ics.uci.edu/.../junkyard/scot.drysdale

77. The AMS Working Group Homepage Plate database The Institute of astronomy of the Bulgarian error is between 0.0004 and 0.0007mag for the online (http//www.clark.net/pub/warnock/ASTROprofile http://ams.astro.univie.ac.at/links.php

Hydrogen Burning Stars Abundance Analysis Space Experiments Databases ... Software Some useful astronomical links Preprints and Papers Currently one of the best ways to stay up to date on what is being submitted is to consult the ApJ's yellow pages. This is a reactive activity. It is easier to receive a daily message from the preprint database at the Los Alamos National Laboratory (http://xxx.lanl.gov/archive/astro-ph). It is important to remember though that the documents in the database were not yet refereed and they are just preprints subject (sometimes) to major reviews. The archive has several mirrors and it is best to select the closer one for retrieval. The Scuola Internazionale Superiore di Studi Avanzati in Triestre is one of them. Actual papers can be obtained from NASA's Astrophysical Data Service , ADS (at http://adswww.harvard.edu/) and its mirror sites in France (http://cdsads.u-strasbg.fr) and Japan (http://ads.noa.ac.jp/). The Pre-Main Sequence Stars

78. Sky And Telescope Sky Telescope, the Essential Magazine of astronomy. News, observing tips, howto advice, and more! Welcome to SkyandTelescope.com, where you'll find astronomy news, stargazing tips, expert advice on choosing and using http://www.skypub.com/

79. Nico Lonetti Web Page - Siti Astronomia http://www.geocities.com/Area51/Dimension/5189/siti_ast.htm

Gruppo Astrofili Menkalinan Search on NASA Spacelink vedi anche astrolink AAVSO Associazione americana degli osservatori delle stelle: da quasi un secolo coordina e aiuta sia i professionisti che i dilettanti amatoriali nell'osservazione degli astri. http://www.aavso.org/ ASI Forse non tutti sanno che anche l'Italia ha una sua agenzia spaziale... questo e' il sito ufficiale: anche se e' discutibile la scelta dell'inglese per le pagine, vale la pena di visitarlo. http://www.asi.it/ ASTRO-LINK Con lo slogan "Esplora il cielo con noi" questa rivista digitale si propone come notiziario e come guida alle scoperte e alle risorse scientifiche nel mondo dell'astronomia. http://www.mclink.it/mclink/astro/ ASTRONOMIA IN ITALIA Astrofili.org e' un progetto che si propone di riunire tutto il Web astronomico, e di funzionare come portale per tutta l'astronomia amatoriale italiana. Per rendere l'astronomia un qualcosa di familiare anche all'uomo della strada. http://astrofili.org/ ASTRONOMY PAGES Sito amatoriale che contiene una vasta serie di immagini, corredate di spiegazioni e informazioni, sull'universo e sul sistema solare in particolar

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