From bdfa1d51ac8b43af1460a6ea928d5071494dbbf9 Mon Sep 17 00:00:00 2001
From: Anthony Wang
Date: Sat, 22 Jan 2022 20:46:44 -0600
Subject: Add pdfs to LFS

---
 .gitignore                                         |   1 -
 .../Atnf/Binary _ Variable Star Questions(1).pdf   |   3 +
 .../Atnf/Binary _ Variable Star Questions.pdf      |   3 +
 .../Astro 2018/Atnf/Binary and Variable Stars.pdf  |   3 +
 .../Atnf/Cepheid Variable Stars _ Distance(1).pdf  |   3 +
 .../Atnf/Cepheid Variable Stars _ Distance.pdf     |   3 +
 .../Atnf/Introduction to Binary Stars.pdf          |   3 +
 ...oduction to the Hertzsprung-Russell Diagram.pdf |   3 +
 Astro 2019/Astro 2018/Atnf/Main Sequence Stars.pdf |   3 +
 .../Atnf/Modelling Binary Light Curves.pdf         |   3 +
 .../Astro 2018/Atnf/Post-Main Sequence Stars.pdf   |   3 +
 .../Astro 2018/Atnf/Pulsating Variable Stars.pdf   |   3 +
 Astro 2019/Astro 2018/Atnf/Star Clusters.pdf       |   3 +
 Astro 2019/Astro 2018/Atnf/Star Formation.pdf      |   3 +
 .../The Death of Stars I_ Solar Mass Stars.pdf     |   3 +
 .../Astro 2018/Atnf/Types of Binary Stars.pdf      |   3 +
 .../Astro 2018/Atnf/Types of Binary Stars2.pdf     |   3 +
 .../Astro 2018/Atnf/Types of Variable Stars.pdf    |   3 +
 .../Astro 2018/Chandra Stuuz/Circinus X_1.pdf      |   3 +
 Astro 2019/Astro 2018/Chandra Stuuz/DEM L241.pdf   |   3 +
 .../Chandra Stuuz/Geminga and B0355+54.pdf         |   3 +
 Astro 2019/Astro 2018/Chandra Stuuz/IC 443.pdf     |   3 +
 Astro 2019/Astro 2018/Chandra Stuuz/M82.pdf        |   3 +
 Astro 2019/Astro 2018/Chandra Stuuz/NGC 6357.pdf   |   3 +
 Astro 2019/Astro 2018/Chandra Stuuz/RCW 103.pdf    |   3 +
 Astro 2019/Astro 2018/Chandra Stuuz/SN 1987A.pdf   |   3 +
 Astro 2019/Astro 2018/Chandra Stuuz/SN W49B.pdf    |   3 +
 .../Item Stuuz 2.0/Balmer series - Wikipedia.pdf   |   3 +
 .../Item Stuuz 2.0/CNO cycle - Wikipedia.pdf       |   3 +
 .../Death Of Stars 2 High Mass Stars.pdf           |   3 +
 .../Astro 2018/Item Stuuz 2.0/Formula_Sheet.pdf    |   3 +
 .../Gamma-ray binaries _ AstroMeV.pdf              |   3 +
 .../Item Stuuz 2.0/H-alpha - Wikipedia.pdf         |   3 +
 .../Item Stuuz 2.0/Hydrogen line - Wikipedia.pdf   |   3 +
 .../Item Stuuz 2.0/Main Sequence Stars.pdf         |   3 +
 .../Item Stuuz 2.0/Metallicity - Wikipedia.pdf     |   3 +
 .../Item Stuuz 2.0/PhotoGraphic Astronomy.pdf      |   3 +
 .../Item Stuuz 2.0/Population I and II Stars.pdf   |   3 +
 .../Item Stuuz 2.0/PostMainSequenceStars.pdf       |   3 +
 .../Item Stuuz 2.0/Supernova - Wikipedia.pdf       |   3 +
 .../The Death of Stars I_ Solar Mass Stars.pdf     |   3 +
 .../Item Stuuz 2.0/The Magnitude Scale.pdf         |   3 +
 .../Triple-alpha process - Wikipedia.pdf           |   3 +
 .../Type II supernova - Wikipedia.pdf              |   3 +
 .../Type Ia supernova - Wikipedia.pdf              |   3 +
 Astro 2019/Astro 2018/Item Stuuz 2.0/Type IbIc.pdf |   3 +
 ...nates - Understanding Celestial Coordinates.pdf |   3 +
 .../Astro 2018/Item Stuuz 2.0/black hole.pdf       |   3 +
 .../Astro 2018/Item Stuuz 2.0/color index.pdf      |   3 +
 Astro 2019/Astro 2018/Item Stuuz 2.0/galaxy.pdf    |   3 +
 .../Item Stuuz 2.0/proton-proton chain.pdf         |   3 +
 .../Item Stuuz 2.0/solar system history.pdf        |   3 +
 .../Item Stuuz 2.0/stellar population.pdf          |   3 +
 .../Astro 2018/Item Stuuz 2.0/white dwarf list.pdf |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/AG Carinae.pdf    |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/ASASSN-15lh.pdf   |   3 +
 .../Wiki Stuuz/AlphaOrionis(Betelgeuse).pdf        |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/Circinus X-1.pdf  |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/DEM L241.pdf      |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/Geminga.pdf       |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/HR 5171.pdf       |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/IC443.pdf         |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/M82 X-2.pdf       |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/NGC 7822.pdf      |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/NGC6357.pdf       |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/PSR B0355+54.pdf  |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/RCW103.pdf        |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/S Doradus.pdf     |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/SN 1987A.pdf      |   3 +
 Astro 2019/Astro 2018/Wiki Stuuz/SN W49B.pdf       |   3 +
 Astro 2019/Astro 2018/astrorules.pdf               |   3 +
 Astro 2019/Astro 2018/black hole.pdf               |   3 +
 Astro 2019/Astro 2018/item stuuz/binaries.pdf      |   3 +
 Astro 2019/Astro 2018/item stuuz/cepheids.pdf      |   3 +
 .../Astro 2018/item stuuz/eclipsing binaries.pdf   |   3 +
 Astro 2019/Astro 2018/item stuuz/hii regions.pdf   |   3 +
 Astro 2019/Astro 2018/item stuuz/hypergiants.pdf   |   3 +
 .../Astro 2018/item stuuz/luminous blues.pdf       |   3 +
 Astro 2019/Astro 2018/item stuuz/magnetars (1).pdf |   3 +
 Astro 2019/Astro 2018/item stuuz/magnetars(1).pdf  |   3 +
 Astro 2019/Astro 2018/item stuuz/magnetars(2).pdf  |   3 +
 Astro 2019/Astro 2018/item stuuz/magnetars.pdf     |   3 +
 Astro 2019/Astro 2018/item stuuz/neutron_stars.pdf |   3 +
 .../Astro 2018/item stuuz/red supergiant.pdf       |   3 +
 .../item stuuz/semiregular variables.pdf           |   3 +
 .../Astro 2018/item stuuz/stellar black holes.pdf  |   3 +
 .../item stuuz/stellar classification.pdf          |   3 +
 .../Astro 2018/item stuuz/stellar evolution.pdf    |   0
 .../Astro 2018/item stuuz/type ii supernovae.pdf   |   3 +
 .../Astro 2018/item stuuz/variable stars.pdf       |   3 +
 Astro 2019/Astro 2018/item stuuz/wolf-rayets.pdf   |   3 +
 .../Astro 2018/item stuuz/x-ray binaries.pdf       |   3 +
 Astro 2019/Chandra Stuuz/47 Tucanae.pdf            |   3 +
 Astro 2019/Chandra Stuuz/Abell 400.pdf             |   3 +
 Astro 2019/Chandra Stuuz/Antennae Galaxies.pdf     |   3 +
 Astro 2019/Chandra Stuuz/Centaurus A.pdf           |   3 +
 Astro 2019/Chandra Stuuz/Chandra DFS.pdf           |   3 +
 Astro 2019/Chandra Stuuz/ESO 137-001.pdf           |   3 +
 Astro 2019/Chandra Stuuz/IC 10.pdf                 |   3 +
 Astro 2019/Chandra Stuuz/M51.pdf                   |   3 +
 Astro 2019/Chandra Stuuz/M81.pdf                   |   3 +
 Astro 2019/Chandra Stuuz/Phoenix Cluster.pdf       |   3 +
 Astro 2019/Chandra Stuuz/SPT 0346-52.pdf           |   3 +
 Astro 2019/Chandra Stuuz/Sagittarius A-star.pdf    |   3 +
 Astro 2019/Chandra Stuuz/Thing in M100.pdf         |   3 +
 Astro 2019/Chandra Stuuz/Thing in NGC 4993.pdf     |   3 +
 Astro 2019/Formula_Sheet.pdf                       |   3 +
 Astro 2019/Item stuuz/Everything.pdf               |   3 +
 Astro 2019/Item stuuz/Globular cluster.pdf         |   3 +
 Astro 2019/Item stuuz/Gravitational waves.pdf      |   3 +
 Astro 2019/Item stuuz/Neutron star.pdf             |   3 +
 Astro 2019/Item stuuz/Pulsar.pdf                   |   3 +
 Astro 2019/Item stuuz/Starburst galaxy.pdf         |   3 +
 Astro 2019/Item stuuz/Stellar black holes.pdf      |   3 +
 Astro 2019/Item stuuz/Stellar pops.pdf             |   3 +
 .../Item stuuz/Supermassive black hole _)(1).pdf   |   3 +
 .../Item stuuz/Supermassive black hole _).pdf      |   3 +
 Astro 2019/Item stuuz/Tully-Fisher.pdf             |   3 +
 Astro 2019/Item stuuz/Type II.pdf                  |   3 +
 Astro 2019/Item stuuz/Type Ia.pdf                  |   3 +
 Astro 2019/Item stuuz/ULX.pdf                      |   3 +
 Astro 2019/Item stuuz/X-ray binary.pdf             |   3 +
 Astro 2019/Rules Sheet 2020.pdf                    |   3 +
 .../Solar System State Trash/Solar cycle.pdf       |   3 +
 .../Solar System State Trash/astroid belt.pdf      |   3 +
 Astro 2019/Solar System State Trash/earth.pdf      |   3 +
 Astro 2019/Solar System State Trash/jupiter.pdf    |   3 +
 .../Solar System State Trash/kuiper belt.pdf       |   3 +
 Astro 2019/Solar System State Trash/mars.pdf       |   3 +
 Astro 2019/Solar System State Trash/mercury.pdf    |   3 +
 Astro 2019/Solar System State Trash/neptune.pdf    |   3 +
 Astro 2019/Solar System State Trash/oort cloud.pdf |   3 +
 Astro 2019/Solar System State Trash/planets x.pdf  |   3 +
 Astro 2019/Solar System State Trash/saturn.pdf     |   3 +
 .../Solar System State Trash/solar system.pdf      |   3 +
 Astro 2019/Solar System State Trash/sun.pdf        |   3 +
 Astro 2019/Solar System State Trash/uranus.pdf     |   3 +
 Astro 2019/Solar System State Trash/venus.pdf      |   3 +
 .../Active galactic nucleus - Wikipedia.pdf        |   3 +
 .../Barred spiral galaxy - Wikipedia.pdf           |   3 +
 Astro 2019/State Trash/Dark matter - Wikipedia.pdf |   3 +
 .../State Trash/Dwarf galaxy - Wikipedia.pdf       |   3 +
 .../State Trash/Elliptical galaxy - Wikipedia.pdf  |   3 +
 Astro 2019/State Trash/Galaxy - Wikipedia.pdf      |   3 +
 .../Interstellar medium - Wikipedia.pdf            |   3 +
 .../State Trash/Irregular galaxy - Wikipedia.pdf   |   3 +
 .../State Trash/Lenticular galaxy - Wikipedia.pdf  |   3 +
 ...on nuclear emission-line region - Wikipedia.pdf |   3 +
 .../Luminous infrared galaxy - Wikipedia.pdf       |   3 +
 Astro 2019/State Trash/Milky Way - Wikipedia.pdf   |   3 +
 .../State Trash/Peculiar galaxy - Wikipedia.pdf    |   3 +
 Astro 2019/State Trash/Quasar - Wikipedia.pdf      |   3 +
 Astro 2019/State Trash/Ring galaxy - Wikipedia.pdf |   3 +
 .../State Trash/Seyfert galaxy - Wikipedia.pdf     |   3 +
 .../State Trash/Spiral galaxy - Wikipedia.pdf      |   3 +
 .../State Trash/Starburst galaxy - Wikipedia.pdf   |   3 +
 .../Ultra diffuse galaxy - Wikipedia.pdf           |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/3C 75.pdf           |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/47 Tucanae.pdf      |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/Abell 400.pdf       |   3 +
 .../Wiki stuuz/DSO wiki/Antennae Galaxies.pdf      |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/Astar _3(1).pdf     |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/Astar _3.pdf        |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/Cen A.pdf           |   3 +
 .../DSO wiki/Chandra deep field-south.pdf          |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/ESO 137-001.pdf     |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/IC10.pdf            |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/M100.pdf            |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/M51.pdf             |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/M81.pdf             |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/M82.pdf             |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/NGC 1128.pdf        |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/NGC 4993.pdf        |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/Phoenix Cluster.pdf |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/SN2014J.pdf         |   3 +
 Astro 2019/Wiki stuuz/DSO wiki/SPT 0346-52.pdf     |   3 +
 .../Globular cluster - Wikipedia.pdf               |   3 +
 ...\200\223Merritt mass estimator - Wikipedia.pdf" |   3 +
 .../Plummer model - Wikipedia.pdf                  |   3 +
 .../Wiki stuuz/Stellar evolution - Wikipedia.pdf   |   3 +
 Astro 2019/astro rules.pdf                         |   3 +
 Astro 2019/how to stellar evo/10 Universe.pdf      |   3 +
 Astro 2019/how to stellar evo/11 Solar System.pdf  |   3 +
 Astro 2019/how to stellar evo/12 ETs.pdf           |   3 +
 Astro 2019/how to stellar evo/5 Early Stars.pdf    |   3 +
 Astro 2019/how to stellar evo/6 Late Stars.pdf     |   3 +
 Astro 2019/how to stellar evo/7 Star Clusters.pdf  |   3 +
 Astro 2019/how to stellar evo/8 Milky Way.pdf      |   3 +
 Astro 2019/how to stellar evo/9 Galaxies.pdf       |   3 +
 Astro 2021/.gitignore                              | 144 +++++
 Astro 2021/.gitmodules                             |   3 +
 Astro 2021/LICENSE                                 | 674 +++++++++++++++++++++
 Astro 2021/Links/DSOs.txt                          |   1 +
 Astro 2021/Links/Galaxies.txt                      |   3 +
 Astro 2021/Links/General.txt                       |   2 +
 Astro 2021/Links/Stars.txt                         |  13 +
 .../Links/Stellar and Galactic Evolution.txt       |   3 +
 Astro 2021/README.md                               |  70 +++
 Astro 2021/mkbinder.py                             |  78 +++
 Astro 2021/requirements.txt                        |  36 ++
 ...0161223ar-sco-the-first-white-dwarf-pulsar.pdf" |   3 +
 ... duckduckgo.comqARScorpiiiaximagesiaimages.pdf" |   3 +
 ...en.google-info.org512190121ar-scorpii.html.pdf" |   3 +
 ...-scorpii-a-new-type-of-pulsar-94f87283823a.pdf" |   3 +
 ...f-a-kind-star-found-to-change-over-decades.pdf" |   3 +
 ...-binary-star-system-ar-scorpii-emit-energy.pdf" |   3 +
 ...bad.u-strasbg.frsimbadsim-idIdentARScorpii.pdf" |   3 +
 ....harvard.eduabs2017ASPC..510..439Babstract.pdf" |   3 +
 ...- www.universeguide.comstar122590arscorpii.pdf" |   3 +
 "DSOs/ASASSN-16oh\n - arxiv.orgabs1906.11464.pdf"  |   3 +
 ...ASASSN-16oh\n - arxiv.orgabs1906.11464.pdf.pdf" |   3 +
 "DSOs/ASASSN-16oh\n - arxiv.orgabs2002.10717.pdf"  |   3 +
 ...ASASSN-16oh\n - arxiv.orgabs2002.10717.pdf.pdf" |   3 +
 ...chandra.harvard.eduphoto2018wdacindex.html.pdf" |   3 +
 ...uckduckgo.comqASASSN-16ohiaximagesiaimages.pdf" |   3 +
 ...ience.iop.orgarticle10.38471538-4357ab7996.pdf" |   3 +
 ...ck-plus-signs-compared-with_fig2_334082071.pdf" |   3 +
 ....harvard.eduabs2020ApJ...892...15Kabstract.pdf" |   3 +
 ...e-a-white-dwarf-surprises-astronomers.html.pdf" |   3 +
 ..._Supersoft_X-Ray_Source_in_Old_Populations.pdf" |   3 +
 ...duckgo.comqAlphaTauristariaximagesiaimages.pdf" |   3 +
 ...live.comskystarsaldebaran-alpha-tauri-star.pdf" |   3 +
 ... duckduckgo.comqESO577-24iaximagesiaimages.pdf" |   3 +
 ...lescope-captures-a-fleeting-moment-in-time.pdf" |   3 +
 ...bad.u-strasbg.frsimbadsim-idIdentESO577-24.pdf" |   3 +
 ...-24\n - www.astrophotolab.comprn1902eo.htm.pdf" |   3 +
 ...577-24\n - www.eso.orgpublicimageseso1902c.pdf" |   3 +
 ...24\n - www.universeguide.comnebulaeso57724.pdf" |   3 +
 ...l\n - scioly.orgwikiindex.phpAstronomyDSOs.pdf" |   3 +
 ...uckgo.comqHBC672iarimagesiaximagesiaimages.pdf" |   3 +
 .../HBC 672\n - esahubble.orgimagesheic1819a.pdf"  |   3 +
 ...tsmediaimages2018404237-Image.htmlnewstrue.pdf" |   3 +
 ...s.orgnews2020-06-hubble-cosmic-shadow.html.pdf" |   3 +
 ...ntwebhubble-60900-cosmic-shadow-of-hbc-672.pdf" |   3 +
 ...bble-watches-hbc-672---the-bat-shadow.html.pdf" |   3 +
 ...s-a-star-called-hbc-672-and-the-bat-shadow.pdf" |   3 +
 ...dow-hbc-672-planet-forming-disk-08576.html.pdf" |   3 +
 ...H 24-26\n - apod.nasa.govapodap151218.html.pdf" |   3 +
 ...ckgo.comqHerbig-Haro24-26iaximagesiaimages.pdf" |   3 +
 "DSOs/HH 24-26\n - esahubble.orgnewsheic1526.pdf"  |   3 +
 ...4-26\n - handwiki.orgwikiAstronomyHH_24-26.pdf" |   3 +
 ...rgcontentsmediaimages2015423656-Image.html.pdf" |   3 +
 ....harvard.eduabs1999ESASP.427..471Babstract.pdf" |   3 +
 ...-jets-from-a-young-star-herbig-haro-24.pdf.pdf" |   3 +
 ...ctroscopic-view-of-the-HH-24-26-region.pdf.pdf" |   3 +
 ..._spectroscopic_view_of_the_HH_24-26_region.pdf" |   3 +
 "DSOs/HOPS 383\n - arxiv.orgabs1501.00492.pdf"     |   3 +
 "DSOs/HOPS 383\n - arxiv.orgpdf1501.00492.pdf.pdf" |   3 +
 ...83\n - chandra.harvard.eduphoto2020hops383.pdf" |   3 +
 ...harvard.eduphoto2020hops383animations.html.pdf" |   3 +
 ...duckduckgo.comqHOPS383th_iaximagesiaimages.pdf" |   3 +
 ...ce.iop.orgarticle10.10882041-82058001L5pdf.pdf" |   3 +
 ...s2020-06-x-rays-newborn-star-hint-sun.html.pdf" |   3 +
 ....harvard.eduabs2015ApJ...800L...5Sabstract.pdf" |   3 +
 ...ch-a-growth-spurt-from-a-newborn-protostar.pdf" |   3 +
 ...s.comphoto-gallery-iinebulae-cloudsic-4593.pdf" |   3 +
 ...593\n - chandra.harvard.eduphoto2020ic4593.pdf" |   3 +
 ....harvard.eduphoto2020ic4593animations.html.pdf" |   3 +
 ...n - duckduckgo.comqIC4593iaximagesiaimages.pdf" |   3 +
 "DSOs/IC 4593\n - esahubble.orgimagesopo0733d.pdf" |   3 +
 ...rgcontentsmediaimages2007332187-Image.html.pdf" |   3 +
 ...n - stars.astro.illinois.edusowic4593.html.pdf" |   3 +
 ...\n - theskylive.comskydeepskyic4593-object.pdf" |   3 +
 ...agesa-cosmic-amethyst-in-a-dying-star.html.pdf" |   3 +
 ...bubble-planetary-nebula-ic-4593-09051.html.pdf" |   3 +
 ...40-365\n - astroserver.orgreferencesNWKZKA.pdf" |   3 +
 ...- duckduckgo.comqLP40-365iaximagesiaimages.pdf" |   3 +
 ....harvard.eduabs2018MNRAS.479L..96Rabstract.pdf" |   3 +
 ...star-running-away-galaxy-2m-miles-hour.htm.pdf" |   3 +
 ...unaway-dead-star-hurtles-through-milky-way.pdf" |   3 +
 ...tal-star-survived-a-surpernova-living-fast.pdf" |   3 +
 ...n - www.universeguide.comstar131298lp40365.pdf" |   3 +
 ...uckduckgo.comqOmicronCetiiaximagesiaimages.pdf" |   3 +
 ...sics.phy-astr.gsu.eduhbaseStarlogceti.html.pdf" |   3 +
 ...on Ceti\n - www.aavso.orglcotwomicron-ceti.pdf" |   3 +
 .../Omicron Ceti\n - www.aavso.orgvsots_mira.pdf"  |   3 +
 ... Ceti\n - www.britannica.complaceMira-Ceti.pdf" |   3 +
 ...y.commagazine201910inside-the-orion-nebula.pdf" |   3 +
 ....comqOrionNebulaiarimagesiaximagesiaimages.pdf" |   3 +
 ...galaxiesorion-nebula-jewel-in-orions-sword.pdf" |   3 +
 ...rgcontentsmediaimages2006011826-Image.html.pdf" |   3 +
 ...la\n - www.britannica.complaceOrion-Nebula.pdf" |   3 +
 ...orion-nebula-is-even-greater-than-you-know.pdf" |   3 +
 ...turegoddard2017messier-42-the-orion-nebula.pdf" |   3 +
 ...- astro.gsu.educrenshawCepheid_RRLyrae.pdf.pdf" |   3 +
 ...ae\n - astronomy.swin.edu.aucosmosRRRLyrae.pdf" |   3 +
 ... - duckduckgo.comqRRLyraeiaximagesiaimages.pdf" |   3 +
 ...\n - stars.astro.illinois.edusowrrlyr.html.pdf" |   3 +
 ...rdate.orgresearchcosmic_rulersrr-lyrae.php.pdf" |   3 +
 "DSOs/RR Lyrae\n - www.aavso.orgvsots_rrlyr.pdf"   |   3 +
 ...n - www.britannica.comscienceRR-Lyrae-star.pdf" |   3 +
 ...arling.infoencyclopediaRRR_Lyrae_star.html.pdf" |   3 +
 ...duckgo.comqSDSS10352B0551iaximagesiaimages.pdf" |   3 +
 ...chool2015medialecturesDhillon_lecture1.pdf.pdf" |   3 +
 ...S 1035+0551\n - quasar9.blogspot.com200701.pdf" |   3 +
 ...kdhillon.staff.shef.ac.ukhipercaminfo.html.pdf" |   3 +
 ...35+0551\n - www.ing.iac.esPRpressbdcv.html.pdf" |   3 +
 ...uploaded_filesAstronomy2022_Transcript.pdf.pdf" |   3 +
 ...31s SNR\n - apod.nasa.govapodap090317.html.pdf" |   3 +
 ...42\200\231s SNR\n - arxiv.orgabs1701.06740.pdf" |   3 +
 ...00\231s SNR\n - arxiv.orgabs1701.06740.pdf.pdf" |   3 +
 ... - chandra.harvard.edueduformalsnrds9.html.pdf" |   3 +
 ... SNR\n - chandra.harvard.eduphoto2005tycho.pdf" |   3 +
 ... SNR\n - chandra.harvard.eduphoto2019tycho.pdf" |   3 +
 ...uckgo.comqTychoE28099sSNRiaximagesiaimages.pdf" |   3 +
 ...cemtgssummerschool2012week1SNRs_Hewitt.pdf.pdf" |   3 +
 ...eduelibraryicrc2011papersOG2.2icrc0164.pdf.pdf" |   3 +
 ...\n - www.chandra.harvard.eduphoto2011tycho.pdf" |   3 +
 ...n - www.solstation.comx-objectstycho-s.htm.pdf" |   3 +
 ...iae\n - core.ac.ukdownloadpdf227453895.pdf.pdf" |   3 +
 ...- duckduckgo.comqUAntliaeiaximagesiaimages.pdf" |   3 +
 ...aceaging-star-u-antliae-smoky-bubble-video.pdf" |   3 +
 ...- faculty.etsu.edulutterpapersUAnt2009.pdf.pdf" |   3 +
 ...mbad.u-strasbg.frsimbadsim-idIdentUAntliae.pdf" |   3 +
 ...n - www.universeguide.comstar51821uantliae.pdf" |   3 +
 ... duckduckgo.comqVSagittaeiaximagesiaimages.pdf" |   3 +
 ....orgspacev-sagittae-to-go-nova-around-2083.pdf" |   3 +
 ...0-01-binary-star-sagittae-bright-nova.html.pdf" |   3 +
 ...www.cloudynights.comtopic689787-v-sagittae.pdf" |   3 +
 ...-explosion-visible-from-earth-this-century.pdf" |   3 +
 ...sfilesv_sagittaevsge_technical-details.pdf.pdf" |   3 +
 ....lsu.eduphysicsnewsv_sge-press_release.php.pdf" |   3 +
 ...- www.universeguide.comstar123903vsagittae.pdf" |   3 +
 ...agittae-should-go-nova-within-this-century.pdf" |   3 +
 ...kgo.comqV1331Cygiarimagesiaximagesiaimages.pdf" |   3 +
 ...V1331 Cyg\n - esahubble.orgimagespotw1509a.pdf" |   3 +
 ...g\n - handwiki.orgwikiAstronomyV1331_Cygni.pdf" |   3 +
 ...016-04-young-star-v1331-cygni-unveils.html.pdf" |   3 +
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diff --git a/Astro 2021/.gitignore b/Astro 2021/.gitignore
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index 0000000..45bda7c
--- /dev/null
+++ b/Astro 2021/.gitignore	
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+# Custom
+.DS_Store
+*.pickle
+*.pdf
+*.docx
+*.pptx
+*.gif
+*.htm
+*.jpg
+*.doc
+*.png
+*.zip
+*.html
+hbase
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
diff --git a/Astro 2021/.gitmodules b/Astro 2021/.gitmodules
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+[submodule "astropy"]
+	path = astropy
+	url = https://github.com/astropy/astropy.git
diff --git a/Astro 2021/LICENSE b/Astro 2021/LICENSE
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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+ Everyone is permitted to copy and distribute verbatim copies
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+    You should have received a copy of the GNU General Public License
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+    This is free software, and you are welcome to redistribute it
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+
+The hypothetical commands `show w' and `show c' should show the appropriate
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+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
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+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/Astro 2021/Links/DSOs.txt b/Astro 2021/Links/DSOs.txt
new file mode 100644
index 0000000..cebdbe1
--- /dev/null
+++ b/Astro 2021/Links/DSOs.txt	
@@ -0,0 +1 @@
+https://scioly.org/wiki/index.php/Astronomy/DSOs
diff --git a/Astro 2021/Links/Galaxies.txt b/Astro 2021/Links/Galaxies.txt
new file mode 100644
index 0000000..0bb1e04
--- /dev/null
+++ b/Astro 2021/Links/Galaxies.txt	
@@ -0,0 +1,3 @@
+https://scioly.org/wiki/index.php/Astronomy/Galaxies
+https://scioly.org/wiki/index.php/Astronomy/Active_Galaxies
+https://scioly.org/wiki/index.php/Astronomy/Starburst_Galaxies
diff --git a/Astro 2021/Links/General.txt b/Astro 2021/Links/General.txt
new file mode 100644
index 0000000..9946106
--- /dev/null
+++ b/Astro 2021/Links/General.txt	
@@ -0,0 +1,2 @@
+https://scioly.org/wiki/index.php/Astronomy
+https://scioly.org/wiki/index.php/Astronomy/JS9
diff --git a/Astro 2021/Links/Stars.txt b/Astro 2021/Links/Stars.txt
new file mode 100644
index 0000000..dee59e5
--- /dev/null
+++ b/Astro 2021/Links/Stars.txt	
@@ -0,0 +1,13 @@
+# HR diagrams
+https://astronomy.swin.edu.au/cosmos/h/hertzsprung-russell+diagram
+
+# Spectra
+https://www.britannica.com/science/star-astronomy/Stellar-spectra
+https://courses.lumenlearning.com/astronomy/chapter/the-spectra-of-stars-and-brown-dwarfs/
+
+# Type Ia Supernovae
+https://scioly.org/wiki/index.php/Astronomy/Type_Ia_Supernovae
+
+# Type II Supernovae
+https://scioly.org/wiki/index.php/Astronomy/Type_II_Supernovae
+
diff --git a/Astro 2021/Links/Stellar and Galactic Evolution.txt b/Astro 2021/Links/Stellar and Galactic Evolution.txt
new file mode 100644
index 0000000..49b6088
--- /dev/null
+++ b/Astro 2021/Links/Stellar and Galactic Evolution.txt	
@@ -0,0 +1,3 @@
+https://scioly.org/wiki/index.php/Astronomy/Star_and_Planet_Formation
+https://scioly.org/wiki/index.php/Astronomy/Stellar_Evolution
+
diff --git a/Astro 2021/README.md b/Astro 2021/README.md
new file mode 100644
index 0000000..4f03a04
--- /dev/null
+++ b/Astro 2021/README.md	
@@ -0,0 +1,70 @@
+# Astronomy
+
+Resources for Science Olympiad Astronomy
+
+
+## Guide
+
+### Google Drive
+
+Folder: https://drive.google.com/drive/folders/1tSWqSONcjwJWfYled2abuSCmDSUt4KiA?usp=sharing
+
+You should download it before contests since you technically can't use the internet during contests.
+
+
+### rclone
+
+You can copy the Google Drive folder to your computer with `rclone copy "drive:Science/Science Olympiad 20.5/Astronomy 20.5/Astro 2021" . --exclude="General/Hyperphysics English.zip" -P`.
+
+You can copy your files to the Google Drive with `rclone copy . "drive:Science/Science Olympiad 20.5/Astronomy 20.5/Astro 2021" --exclude="astropy/**" --exclude=".git/**" --exclude=".venv/**" --exclude="General/hbase/**" -P`.
+
+
+## Kiwix
+
+Download all of Wikipedia, or optionally, Wikipedia Astronomy.
+
+
+## Speedcrunch
+
+Great for unit conversions: https://speedcrunch.org/userguide/advanced.html
+
+
+## Astropy
+
+For advanced users, you will definitely want to build the documentation: https://github.com/astropy/astropy/blob/main/docs/install.rst#building-documentation
+
+
+### Wikipedia
+
+You can download Wikipedia using [Kiwix](https://www.kiwix.org/en/). It should be more than enough for regionals and state.
+
+
+### Generate a binder
+
+`mkbinder.py` is a Python script to download web pages. It can detect if the latest version of a website is newer than the downloaded version and download only the web pages that need to be updated.
+
+You need to have [Python 3](https://www.python.org/downloads/) installed as well as [wkhtmltopdf](https://wkhtmltopdf.org/). You also need to be able to use the command line.
+
+First download this repository to your computer.
+
+Navigate to the folder in your terminal and run `pip install -r requirements.txt` to install dependencies.
+
+Add links to download to text files in the `Links` folder. The links in each text file will be downloaded to their own folder.
+
+Now run `python mkbinder.py`. It may take a while, depending on how many links to download.
+
+Spam Ctrl-C in your terminal to quit the script while it's running.
+
+You can change the backend used to download the websites, but the default backend `pdfkit` tends to work the best and is recommended. There is an alternative backend `weasyprint` which may work better in some cases and does not require wkhtmltopdf. Only change the backend if you are having trouble with the default and you know what you are doing!
+
+```
+usage: mkbinder.py [-h] [--backend {pdfkit,weasyprint}] [--force {False,True}]
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --backend {pdfkit,weasyprint}, -b {pdfkit,weasyprint}
+                        change the download backend; default: pdfkit
+  --force {False,True}, -f {False,True}
+                        force download all links instead of only the ones that need to be updated; default: False
+```
+
diff --git a/Astro 2021/mkbinder.py b/Astro 2021/mkbinder.py
new file mode 100644
index 0000000..82772a0
--- /dev/null
+++ b/Astro 2021/mkbinder.py	
@@ -0,0 +1,78 @@
+#!.venv/bin/python3
+import pdfkit
+import weasyprint
+import re
+import os
+import argparse
+import pickle
+from htmldate import find_date
+from datetime import date
+
+
+# CLI arguments
+parser = argparse.ArgumentParser()
+parser.add_argument('--backend', '-b', dest = 'backend', help = 'change the download backend; default: pdfkit', default = 'pdfkit', choices = ['pdfkit', 'weasyprint'])
+parser.add_argument('--force', '-f', dest = 'force', help = 'force download all links instead of only the ones that need to be updated; default: False', default = False, choices = [False, True])
+args = parser.parse_args()
+
+
+for filename in os.listdir("Links"):
+    if not filename.endswith(".txt"): continue
+    if filename == "requirements.txt": continue
+    
+    print("Examining: " + filename)
+    
+    try:
+        os.mkdir(filename[:-4])
+    except: # I love bad error handling
+        pass
+    
+    try:
+        dates = pickle.load(open(os.path.join("Links", filename[:-4] + ".pickle"), 'rb'))
+    except:
+        dates = {}
+
+    file = open(os.path.join("Links", filename), "r")
+    links = file.readlines()
+    for link in links:
+        if link[0] == "#" or link[0] == "\n": continue
+        
+        new_date_str = find_date(link[:-1])
+        
+        if new_date_str == None:
+            new_date = date.fromisoformat("9999-01-01")
+        else:
+            new_date = date.fromisoformat(new_date_str)
+        
+        try:
+            old_date = dates[link[:-1]]
+        except:
+            old_date = date.fromisoformat("1970-01-01")
+        
+        
+        if new_date > old_date or args.force:
+            print("Downloading: " + link[:-1])
+            print("Edit date: " + str(new_date))
+            
+            name = os.path.join(filename[:-4], re.sub(r'(?u)[^-\w.]', '', link[5:]) + ".pdf")
+            # name = re.sub(r'(?u)[^-\w.]', '', link[5:]) + ".pdf"
+            # print(name)
+            try:
+                # weasyprint seems faster?
+                # but seems to be broken sometimes???
+                if args.backend == 'pdfkit':
+                    pdfkit.from_url(link, name)
+                else:
+                    pdf = weasyprint.HTML(link).write_pdf()
+                    open(name, 'wb').write(pdf)
+            except: # Maybe should handle errors a little bit better?
+                print("Error when printing")
+                pass
+            
+            
+            if new_date != date.fromisoformat("9999-01-01"):
+                dates[link[:-1]] = new_date
+    
+    
+    pickle.dump(dates, open(os.path.join("Links", filename[:-4] + ".pickle"), 'wb'))
+
diff --git a/Astro 2021/requirements.txt b/Astro 2021/requirements.txt
new file mode 100644
index 0000000..2152bb0
--- /dev/null
+++ b/Astro 2021/requirements.txt	
@@ -0,0 +1,36 @@
+appdirs==1.4.4
+astropy==4.2.1
+cairocffi==1.2.0
+CairoSVG==2.5.2
+cffi==1.14.5
+chardet==4.0.0
+cssselect2==0.4.1
+dateparser==1.0.0
+defusedxml==0.7.1
+distlib==0.3.1
+filelock==3.0.12
+html5lib==1.1
+htmldate==0.8.1
+lxml==4.6.3
+numpy==1.20.2
+packaging==20.9
+pdfkit==0.6.1
+Pillow==8.2.0
+pluggy==0.13.1
+py==1.10.0
+pycparser==2.20
+pyerfa==1.7.3
+pyparsing==2.4.7
+Pyphen==0.10.0
+python-dateutil==2.8.1
+pytz==2021.1
+regex==2021.4.4
+six==1.15.0
+tinycss2==1.1.0
+toml==0.10.2
+tox==3.23.0
+tzlocal==2.1
+urllib3==1.26.4
+virtualenv==20.4.4
+WeasyPrint==52.5
+webencodings==0.5.1
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