9.7 Astrophysics

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General and background information	Observations made from Earth or Space near Earth
Astrometry	Spectroscopy
Photometry	Binary and variable stars
Evolution and death of stars	Image galaries

Stardust All Around Us: Fusion and Element Formation by Mahananda Dasgupta - from Ecoscience, International Science School 2007, The University of Sydney
http://www.physics.usyd.edu.au/foundation/Outreach/ISS/book/ecoscience_part4.pdf

Dark Secrets, Dark Matter, Dark Energy and Dark Skies by Fred Watson - from Ecoscience, International Science School 2007, The University of Sydney
http://www.physics.usyd.edu.au/foundation/Outreach/ISS/book/ecoscience_part12.pdf

The ever changing life of galaxies- webcast presentation by Dr Raffaella Morganti at the 2005 International Science School, The University of Sydney, available for modem or broadband
http://www.physics.usyd.edu.au/foundation/index_iss.html

Monsters lurking in the centre of galaxies- webcast of presentation by Dr Raffaella Morganti at the 2005 International Science School, The University of Sydney, available for modem or broadband
http://www.physics.usyd.edu.au/foundation/index_iss.html

Astrophysics for Senior Physics - from Australia Telescope Outreach and Education
http://outreach.atnf.csiro.au/education/senior/astrophysics/

Astrophysics - from HSC Online
http://hsc.csu.edu.au/physics/options/astrophysics/

Educational Websites of Interest - from School of Physics, UNSW
http://www.phys.unsw.edu.au/hsc/hsc/astrolinks.html

Skyview Cafe Planetarium - interactive planetarium can be set to any location, time and date, from Skyview Cafe
http://www.skyviewcafe.com/index.php

The Cool Cosmos - from California Tech
http://coolcosmos.ipac.caltech.edu/sitemap.html

Stars and Galaxies - from Exploring Earth, McDougal Littell, Classzone
http://www.classzone.com/books/earth_science/terc/navigation/chapter28.cfm

Planet Quest - from jet Propulsion Laboratory, NASA
http://planetquest.jpl.nasa.gov/SIM/sim_index.cfm

Earth's Moon - from Exploring Earth, McDougal Littell, Classzone
http://www.classzone.com/books/earth_science/terc/navigation/chapter25.cfm

The Sun and the Solar System - from Exploring Earth, McDougal Littell, Classzone
http://www.classzone.com/books/earth_science/terc/navigation/chapter26.cfm

The Planets and the Solar System - from Exploring Earth, McDougal Littell, Classzone
http://www.classzone.com/books/earth_science/terc/navigation/chapter27.cfm

Astronomy - lectures, presentaions and notes in pdf from University of Aberdeen
http://www.abdn.ac.uk/physics/astro/

Astronomy Workshop Tools - from Douglas Hamilton, University of Maryland
http://janus.astro.umd.edu/AW/awtools.html

Astrophysics Option - PowerPoint presentation prepared by Helen, Johnston, University of Sydney, for HSC Enrichment Day
http://science.uniserve.edu.au/school/curric/stage6/phys/astro.pdf

Astrophysics Option - notes prepared by Helen Johnston, University of Sydney, for HSC Enrichment Day
http://science.uniserve.edu.au/school/curric/stage6/phys/astrohandout.pdf

Web sites and Worksheets - workshop presented by Sandra Woodward at 10th Biennial Science Teachers' Workshop, 2002, University of Sydney
http://science.uniserve.edu.au/school/curric/stage6/phys/stw2002/woodward.pdf

Tools in Astronomy - workshop presented by Sandra Woodward at 11th Biennial Science Teachers' Workshop, 2004, University of Sydney
http://science.uniserve.edu.au/school/curric/stage6/phys/stw2004/woodward.pdf

Ideas for Astrophysics Techniques for Enhancing Conceptual Understanding - paper presented by Rob Hollow at the 11th Biennial Science Teachers' Workshop, University of Sydney, 2004
http://science.uniserve.edu.au/school/curric/stage6/phys/stw2004/hollow.pdf

Information related to the Astrophysics Option of the HSC Syllabus prepared by Noella D'Cruz for the Science Teachers Workshop, The University of Sydney, June 15th & 16th, 2000. This page contains links for all areas of this module.
http://www.physics.usyd.edu.au/~noella/teach/

The 2dF Galaxy Redshift Survey
http://www.mso.anu.edu.au/2dFGRS/

The 2dF QSO Redshift Survey
http://www.2dfquasar.org/

ASTR 103 - Astronomy Course Notes - from Physics & Astronomy Department, George Mason University
http://physics.gmu.edu/~jevans/astr103/cornt103.html

Astronomy - at The Electronic Universe, The University of Oregon
http://zebu.uoregon.edu/galaxy.html

Imagine the Universe: Advanced Science - from Goddard Space Flight Center, NASA, includes supernova, black holes and white dwarfs
http://imagine.gsfc.nasa.gov/docs/science/know_l2/

The Astronomer Online - a magazine published by The Astronomer Group with details and images of recent observations
http://www.theastronomer.org/

Education and Public Outreach Activities at the HEASARC - from Goddard Space Flight Center, NASA, with animations of Binary, Blackhole and Supernova & Remnant
http://heasarc.gsfc.nasa.gov/docs/corp/outreach.html

UniverseForum - An Education Forum exploring the horizons of space, time and matter - from Harvard-Smithsonian Center for Astrophysics
http://cfa-www.harvard.edu/seuforum/

Educational Materials - from Chandra X-ray Observatory, including Handouts - 2001 Chandra Images With Captions
http://chandra.harvard.edu/edu/

Astronomy 162: Introduction to Stellar, Galactic, & Extragalactic Astronomy - lecture notes and resources to accomapny this course from Ohio State University
http://www-astronomy.mps.ohio-state.edu/~ryden/ast162.html

Prof. GENE SMITH's ASTRONOMY TUTORIAL - from the Center for Astrophysics & Space Sciences, University of California, San Diego
http://cassfos02.ucsd.edu/public/

Galaxies and the Universe - WWW Course Notes - from The University of Alabama
http://www.astr.ua.edu/keel/galaxies/

An Introduction to the Stars - from Queen's University Astronomy Research Group
http://www.astro.queensu.ca/~hanes/p014/Notes/Topic_050.html

Zoom Astronomy - from Enchanted Learning Software
http://www.enchantedlearning.com/subjects/astronomy/

ASTR 4512 and photometry book - a substantial book (155 pages) that can be downloaded in pdf covering photometry, telescopes and more from University of Oklahoma Observatory
http://www.observatory.ou.edu/book2513.html

Leicester University's Educational Guide to Space and Astronomy - contains information on space missions and the universe
http://www.star.le.ac.uk/edu/Index.shtml

Good Astronomy Activities on the World Wide Web - from Astronomical Society of the Pacific
http://www.astrosociety.org/education/activities/astroacts.html

A Sharper View of the Stars: a new generation of interferometers is letting astronomers study stars in 100 times finer detail that is pssoible with the Hubble Space Telescope - feature article from Scientific American
http://www.sciam.com/article.cfm?articleID=0000FFB8-76A3-1C70-84A9809EC588EF21

Astronomy 104: lectures - from the University of Syracuse, select appropriate lecture
http://physics.syr.edu/courses/AST104.06Spring/lectures.html

Welcome to the SETI (Search for the Extraterrestrial Intelligence) module - from the University of Syracuse
http://physics.syr.edu/courses/CCD_NEW/seti/

Solar and Stellar Physics - from Harvard University Department of Astronomy
http://cfa-www.harvard.edu/hco/astro/research/ssp1.html

Space Radiation Laboratory - from California Institute of Technology
http://www.srl.caltech.edu/

Measuring the Stars - from University of Oregon
http://blueox.uoregon.edu/~jimbrau/astr122/Notes/Chapter17.html

From Hipparchus to Hipparcos: Measuring the Universe, One Star at a Time - a revised article from Sky and Telescope
http://wwwhip.obspm.fr/hipparcos/SandT/hip-SandT.html

Astronomers compete to Build World's Largest Telescope - from How Stuff Works
http://www.howstuffworks.com/news-item214.htm

Measuring Stars - notes in pdf from University of Aberdeen
http://www.abdn.ac.uk/physics/astro/notes12a.pdf

Measuring Stars - PowerPoint presentation from University of Aberdeen
http://www.abdn.ac.uk/physics/astro/astro12b.pdf

The Galileo Project - at Rice University, wealth of information on the life and work (including telescope) of Galileo
http://es.rice.edu/ES/humsoc/Galileo/

Galileo's Sidereus Nuncius - with links to Galileo's sketches of the moon, faint stars and Jupiter's moons
http://web.hao.ucar.edu/public/education/sp/images/galileo.1.html

Observations and Experiments of Galileo - from Astronomical Observatory of Padua
http://www.pd.astro.it/E-MOSTRA/NEW/A1002OSS.HTM

Why Build Big Telescopes? - Ideas for Teaching Resolution, Sensitivity and Modern Telescope Design in the Astrophysics Option - paper presented by Rob Hollow at the 10th Biennial Science Teachers' Workshop, University of Sydney, 2002
http://science.uniserve.edu.au/school/curric/stage6/phys/stw2002/hollow.pdf

The World's Largest Optical Telescopes - from Students for the Exploration and Development of Space
http://www.seds.org/billa/bigeyes.html
also at
http://seds.lpl.arizona.edu/billa/bigeyes.html

The Science Case for Extremely Large Telescopes - from the Royal Observatory, Edinburgh
http://www.roe.ac.uk/ukatc/projects/elt/

Astronomy in the deep freeze - from NOVA, the Australian Academy of Science
http://www.science.org.au/nova/065/065key.htm

Optical Design, Error Budget and Specifications for the Columbus Project Telescope - from Steward Observatory, University of Arizona
http://medusa.as.arizona.edu/lbtwww/tech/spieopti.htm

Iowa Robotic Telescope Facility - at the University of Iowa
http://phobos.physics.uiowa.edu/

Telescopes: What the Buyer Needs to Know - from Morehead Planetarium, University of North Carolina, save to disk and open with MS Word
http://www.morehead.unc.edu/articles/telescope/

Subaru: The Telescope - from National Astronomical Observatory of Japan
http://www.naoj.org/Introduction/instrument.html

Instruments: Telescopes Would Be Useless Without Them - from McDonald Observatory
http://mcdonaldobservatory.org/research/instruments/

Sensitivity and Resolution - Lesson Outline - with multimedia resources from Australian Multimedia for Physics Students, The University of Sydney
http://www.hscphysics.edu.au/resource/SenRes.pdf

Resolution - from Sky-Watcher
http://www.skywatchertelescope.net/EducationTBRE.html

article: The Resolution of a Telescope - Dawes, Rayleigh and Sparrow - from The Astroscopic labs
http://www.licha.de/astro_article_mtf_telescope_resolution.php

Sensitivity - from Cool Cosmos
http://coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/sensitivity.html

Measuring the electromagnetic spectrum - from NASA's Imagine the Universe
http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html

The electromagnetic spectrum - from European Space Agency, see also related articles
http://www.esa.int/esaSC/SEM0W1T1VED_index_0.html

Center for Adaptive Optics - at the University of California
http://cfao.ucolick.org/

What is Adaptive Optics - from Center for Adaptive Optics, University of California
http://cfao.ucolick.org/AO/whatisao.html

Twinkle, twinkle little star: the need for adaptive optics in optical astronomy - from Johns Hopkins University
http://www.pha.jhu.edu/~jlotz/aoptics/empaper2.html

ADAPTIVE OPTICS - from Canada France Hawaii Telescope
http://www.cfht.hawaii.edu/Instruments/Imaging/AOB/local_tutorial.html

Adaptive Optics Tutorial - from Adaptive Optics Associates, a company that specialises in electro-optic and opto-mechanical products
http://www.adaptive-optics.com/technologies/adaptiveandmicrooptics/aostutorial.html

Adaptive Optics - from Mt Wilson Observatory
http://www.mtwilson.edu/ao/

Adaptive Optics - Straightening Out Bent Starlight - from The Gemini Observatory
http://www.gemini.edu/public/adaptive.html

Palomar Adaptive Optics System - includes an image of Neptune with Adaptive Optics on and off for comparison, from NASA
http://ao.jpl.nasa.gov/

Adaptive Optics - from Outreach, Australian Telescope National Facility
http://outreach.atnf.csiro.au/education/senior/astrophysics/adaptive_optics.html

A Sharper Image - from Why Files, The New Telescopes
http://whyfiles.org/178new_telescope/3.html

INTERACTIVE INTERFEROMETRY DEMO - from Planet Quest, Jet Propulsion Laboratory, NASA
http://planetquest.jpl.nasa.gov/SIM/Demo/index.cfm

Space Interferometry Mission - (SIM) from the Jet Propulsion Laboratory, NASA
http://sim.jpl.nasa.gov/

Interferometry Center of Excellence - from Jet Propulsion Laboratory, NASA
http://ice.jpl.nasa.gov/interferometry_htmlversion.html

Infrared Interferometry Group - from Max Planck Institute for Radio Astronomy
http://www.mpifr-bonn.mpg.de/div/ir-interferometry/

Interferometry - from Outreach, Australian Telescope National Facility
http://outreach.atnf.csiro.au/education/senior/astrophysics/interferometry.html

Virtual Radio Interferometer - Applet from manchester University
http://www.jb.man.ac.uk/vri/

Active Optics - from Outreach, Australian Telescope National Facility
http://outreach.atnf.csiro.au/education/senior/astrophysics/active_optics.html

A Sharper Image - from Why Files, The New Telescopes
http://whyfiles.org/178new_telescope/3.html

The Hipparcos Space Astrometry Mission - from European Space Agency
http://www.esa.int/esaSC/120366_index_0_m.html

Guide to Minor Body Astrometry - for observers interested in undertaking an astrometric CCD-observing program of minor planet and/or comet, from Harvard-Smithsonian Center for Astrophysics
http://cfa-www.harvard.edu/iau/info/Astrometry.html

Space Astrometry at The University of Texas - includes Full-sky Astrometric Mapping Explorer
http://clyde.as.utexas.edu/SpAstNEW/

The Center for High Angular Resolution Astrometry - Georgia State University
http://www.chara.gsu.edu/CHARA/

Parallax

Stellar parallax - from University of Oregon
http://abyss.uoregon.edu/~js/glossary/parallax.html

Stellar parallax - applet from Cornell University
http://instruct1.cit.cornell.edu/courses/astro101/java/parallax/parallax.html

Stellar Parallax - interactive animation from European Space Agency
http://sci2.esa.int/interactive/media/flashes/2_1_1.htm

DISTANCES TO NEARBY STARS AND THEIR MOTIONS: An Introductory Astronomy Lab - from University of Washington
http://www.astro.washington.edu/labs/parallax/java_parallax.html

The Dynamic Cosmos: A collection of interactive applets for Astronomy Beta Version 1.0 - from University of Oregon, includes Parallax
http://jersey.uoregon.edu/cdrom.html

Simulations and Animations - from University of British Columbia
http://www.astro.ubc.ca/~scharein/a311/Sim.html

Lecture 5: Distances of the Stars - from Ohio State University
http://www-astronomy.mps.ohio-state.edu/~pogge/Ast162/Unit1/distances.html

Parallax - from Cambridge University
http://www.ast.cam.ac.uk/~mjp/parallax.html

Stellar Parallax - from University of North Texas
http://www.phys.unt.edu/Astronomy/online_course_files/sample_pages/05_2.html

Parsec

Parsec - from World of Astronomy
http://scienceworld.wolfram.com/astronomy/Parsec.html

What is the speed of light in parsecs per year? What is a parsec? - from PhysLink.com
http://www.physlink.com/Education/AskExperts/ae239.cfm

Light-year

What is the speed of light in parsecs per year? What is a parsec? - from PhysLink.com
http://www.physlink.com/Education/AskExperts/ae239.cfm

What is a light year and how is it used? - from Goddard Space Flight Center, NASA
http://starchild.gsfc.nasa.gov/docs/StarChild/shadow/questions/question19.html

Astronomical Spectra and Properties of Stars - Lesson Outline - with multimedia resources from Australian Multimedia for Physics Students, The University of Sydney
http://www.hscphysics.edu.au/resource/Spectroscopy.pdf

Index of Session 1, The Sun: A Light of Many Colors - from Astronomy Assist
http://www.astrophys-assist.com/educate/solarobs/ses01p00.htm

Explorations - interactives (including Spectrometry) from the European Space Agency
http://sci2.esa.int/interactive/media/html/sec23p1.htm

SPECTRA - by Jim Kaler at University of Illinois at Urbana-Champaign
http://www.astro.uiuc.edu/~kaler/sow/spectra.html

Meter Stick Spectroscope - applet from Dartmouth College
http://www.dartmouth.edu/~chemlab/info/resources/mashel/MASHEL.html

Spectra of Gas Discharges - from Observatoire Astronomique de Strasbourg
http://astro.u-strasbg.fr/~koppen/discharge/

On-line Interactive Programs from Kansas State University, Department of Physics - including a simulation of both absorption and emission spectrometry, requires Shockwave
http://phys.educ.ksu.edu/vqm/

High Energy Solar Spectroscopic Imager (RHESSI) - from Goddard Space Flight Center, NASA
http://hesperia.gsfc.nasa.gov/hessi/

HESSI Education and Public Outreach - from The Center for Science Education at the University of California Berkeley Space Science Laboratory
http://cse.ssl.berkeley.edu/hessi_epo/html/cur.html

What can we learn about stars? - from Armagh Observatory
http://star.arm.ac.uk/~csj/pus/spectra/tot_l.html

Stellar Spectroscopy - from Surrey Teachers Astrophysics Resource and University of Surrey
http://www.ph.surrey.ac.uk/astrophysics/files/spectroscopy.html

Spectral Types of Stars - applet from University of Manchester
http://www.jb.man.ac.uk/distance/life/sample/java/spectype/specplot.htm

Nebulae: Emission Nebulae - from Goddard Space Flight Center, NASA
http://antwrp.gsfc.nasa.gov/apod/emission_nebulae.html

Emission Nebulae - gallery of images from national optical Astronomy Observatory
http://www.noao.edu/image_gallery/emission_nebulae.html

Photometry - from HyperPhysics, Georgia State University
http://hyperphysics.phy-astr.gsu.edu/hbase/vision/photomcon.html

Techniques of Observational Astronomy - from University of Florida
http://www.astro.ufl.edu/~oliver/ast3722/lectures/BasicPhotom/

Basic Photometry - from State University of New York at Stony Brook
http://www.ess.sunysb.edu/fwalter/AST443/photometry.html

CCD PHOTOMETRY - from the British Atronomical Association
http://www.britastro.com/vss/ccd_photometry.htm

Hands on Astrophysics - from the American Association of Variable Star Observers
http://hoa.aavso.org/

Exercise: The Magnitude Scale and Absolute Magnitude - from University of California, Los Angeles
http://coke.physics.ucla.edu/laptag/Astro.dir/astrocls.dir/magscale.htm

Magnitude System - from Astronomy Notes
http://www.astronomynotes.com/starprop/s4.htm

Distance Determination Methods - from University of Missouri - Columbia
http://www.missouri.edu/~physwww/astronomy_one/html/distance_determination.html

Magnitudes and distance - from Northwestern University
http://www.astro.nwu.edu/labs/m100/mags.html

Talking about: Distances -- Spectroscopic Parallax - an article in The Celestial Mechanic online journal
http://www.ukans.edu/~aal/celestialmechanic/2000/august/4.shtml

Spectroscopic Parallax - from Outreach, Australian National Telescope Facility, CSIRO
http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_specparallax.html

Spectroscopic Parallax: A Tutorial - in pdf from University of Washington
http://www.astro.washington.edu/larson/Astro101/CoursePak/tu08_spectroscopic_parallax.pdf

Color and Temperature - from Astronomy Notes
http://www.astronomynotes.com/starprop/s5.htm

Astronomical "color" - from Rochester Institute of Technology
http://spiff.rit.edu/classes/phys440/lectures/color/color.html

Types of Variable Stars - from the American Association of Variable Star Observers
http://www.aavso.org/vstar/types.stm

Astrometry & Dynamics: Double & Multiple Stars - from Royal Observatory of Belgium (Brussels)
http://www.astro.oma.be/D2/DSTARS/

Variables - from the Astronomer Online journal
http://www.theastronomer.org/variables.html

imaging the secondary stars in CVs - a seminar presentation from University of Sheffield
http://www.shef.ac.uk/~phys/people/vdhillon/seminars/brussels/title.html

Mapping stellar surfaces - from Astrophysics Laboratory of OMP
http://www.ast.obs-mip.fr/users/donati/map.html

Binary Stars: - from University of Oregon
http://zebu.uoregon.edu/~js/ast122/lectures/lec11.html

Multiple Star Systems - from the Online Journey Through Astronomy, University of Tennessee, following pages cover Spectroscopic Binaries, Astrometric Binaries, Optical Binaries and Eclipsing Binaries
http://csep10.phys.utk.edu/astr162/lect/binaries/binaries.html

Variable Stars - from University of Tennessee
http://csep10.phys.utk.edu/astr162/lect/variables/variables.html

How To Decipher Those Classification Codes - of variable stars from the Astronomical Society of South Australia
http://www.assa.org.au/sig/variables/classifications.asp

ECLIPSING BINARIES - a Java Applet from Cornell University
http://instruct1.cit.cornell.edu/courses/astro101/java/eclipse/eclipse.htm

Orbiting BinaryStars - a Java Applet from Cornell University
http://instruct1.cit.cornell.edu/courses/astro101/java/binary/binary.htm

Black Holes: Gravity's Relentless Pull - from Space Telescope Science Institute
http://hubblesite.org/discoveries/black_holes/

Astronomy 122: Birth and Death of Stars - lecture notes from the University of Oregon
http://abyss.uoregon.edu/~js/ast122/

Stellar Evolution - a Java Applet from Cornell University
http://instruct1.cit.cornell.edu/courses/astro101/java/evolve/evolve.htm

Formation and Evolution of Stars - from the University of Calgary
http://www.ras.ucalgary.ca/SKA/science/node12.html

How Hot is That Star? - an interactive tutorial from the Science Museum of Virginia
http://www.smv.org/jims/

The soup that would be a STAR - from the University of Michigan
http://www.umich.edu/~gs265/galaxy.htm

Recipe for Stars - from University of Tennessee
http://csep10.phys.utk.edu/astr162/lect/birth/birth.html

The Constellations and their Stars - from the University of Wisconsin, includes tables of the nearest stars and brightest stars, data includes absolute magnitude and spectral type
http://www.astro.wisc.edu/~dolan/constellations/

Amazing Space - from Space Telescope Science Institute
http://amazing-space.stsci.edu/

Stars - Hertzsprung-Russell Diagram - from University of Tennessee
http://csep10.phys.utk.edu/astr162/lect/hr/hr.html

Stellar Evolutuion and the H-R Diagram - applet from McGraw Hill
http://www.mhhe.com/physsci/astronomy/applets/Hr/frame.html

Hertzsprung-Russell Diagram - from University of Oregon
http://zebu.uoregon.edu/~soper/Stars/hrdiagram.html

The Life of a Star - from THE ASTROPHYSICS GROUP, KEELE UNIVERSITY
http://www.astro.keele.ac.uk/workx/starlife/StarpageS_26M.html

Construction of H-R Diagrams - detailed information from University of Massachusetts
http://www.astro.umass.edu/theses/allen/pro/node1.html

Color Designation and the Hertzsprung-Russell Diagram - from Monthly Astronomy Lessons (Dr Jamie Love)
http://www.synapses.co.uk/astro/hrdiag.html

Planetary Nebulae - from Students for the Exploration and Development of Space
http://www.seds.org/messier/planetar.html

Planetary Nebulae - images from National Optical Astronomy Observatory
http://www.noao.edu/image_gallery/planetary_nebulae.html

Supernova - from Goddard Space Flight Center
http://heasarc.gsfc.nasa.gov/docs/snr.html

Introduction to White Dwarfs - from Goddard Space Flight Center, NASA
http://imagine.gsfc.nasa.gov/docs/science/know_l1/dwarfs.html

The Discovery of Brown Dwarfs - an article from Scientific American
http://www.sciam.com/article.cfm?articleID=000276D4-33FB-1C75-9B81809EC588EF21

White Dwarfs and Nova - from University of Tennessee
http://csep10.phys.utk.edu/astr162/lect/novae/novae.html

Neutron Stars - from University of Marylands
http://www.astro.umd.edu/~miller/nstar.html

Neutron Stars and Pulsars - from Imagine the Universe, NASA
http://imagine.gsfc.nasa.gov/docs/science/know_l1/pulsars.html

Virtual Trips to Black Holes and Neutron Stars - from Goddard Sapce Flight Centre, NASA
http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html

Virtual Trips to Black Holes and Neutron Stars - from Goddard Sapce Flight Centre, NASA
http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html

Black Holes - from Astronomical Society of the Pacific includes classroom activities
http://www.astrosociety.org/education/publications/tnl/24/24.html

Black Holes - from Chandra X-Ray Observatory at Harvard University
http://chandra.harvard.edu/xray_sources/blackholes.html

Hubble Space Telescope Public Pictures - from Space Telescope Science Institute
http://oposite.stsci.edu/pubinfo/pictures.html

Virtual Trips to Black Holes and Neutron Stars - from Goddard Space Flight Center
http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html

Astronomy Picture of the Day Archive - from Goddard Space Flight Center, NASA
http://antwrp.gsfc.nasa.gov/apod/archivepix.html

Hipparcos 3d Stereo Images - from European Space Agency
http://astro.estec.esa.nl/Hipparcos/3dstereo_images.html

Asteroid and Comet Observations - Crni Vrh Observatory
http://www.observatorij.org/

Gallery - from the Astronomical Society of South Australia
http://www.assa.org.au/gallery/

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