1. Finding Useful Information ON THE WEB

2. Published papers Most published papers in astronomy can be found on the NASA Astrophysics Data System: Most published papers in astronomy can be found on the NASA Astrophysics Data System:http://adswww.harvard.edu/

4. ADS To access the most recent papers in some journals you will need a subscription to them, or access them from an institution that has a subscription To access the most recent papers in some journals you will need a subscription to them, or access them from an institution that has a subscription

5. Preprints These are papers posted on the web before they have been published in a journal These are papers posted on the web before they have been published in a journal Many preprints are posted on astro-ph: Many preprints are posted on astro-ph: http://xxx.lanl.gov/find/astro-ph No subscription is needed to access these preprints.

6. Preprints If you want, you can have the astro-ph website send you daily the list of new preprints posted on their site If you want, you can have the astro-ph website send you daily the list of new preprints posted on their site

7. Solar System Ephemerides JPL Horizons On-Line Ephemeris System JPL Horizons On-Line Ephemeris System The JPL Horizons On-Line Ephemeris System provides easy access to key solar system data and flexible production of highly accurate ephemerides for solar system objects. This includes 170,000+ asteroids & comets, 128 natural satellites, 9 planets, the Sun, select spacecraft, and several dynamical points such as Earth-Sun L1, L2 and system barycenters. Users may define their own objects, then use the system to integrate the trajectory, or conduct parameter searches of the comet/asteroid database, searching on combinations of up to 42 different parameters. Rise, transit and set may be identified to the nearest minute. Close-approaches by asteroids and comets to planetary bodies (and Ceres, Pallas, and Vesta) can be easily identified. Orbit uncertainties can be computed for asteroids and comets. The JPL Horizons On-Line Ephemeris System provides easy access to key solar system data and flexible production of highly accurate ephemerides for solar system objects. This includes 170,000+ asteroids & comets, 128 natural satellites, 9 planets, the Sun, select spacecraft, and several dynamical points such as Earth-Sun L1, L2 and system barycenters. Users may define their own objects, then use the system to integrate the trajectory, or conduct parameter searches of the comet/asteroid database, searching on combinations of up to 42 different parameters. Rise, transit and set may be identified to the nearest minute. Close-approaches by asteroids and comets to planetary bodies (and Ceres, Pallas, and Vesta) can be easily identified. Orbit uncertainties can be computed for asteroids and comets.

8. http://ssd.jpl.nasa.gov/horizons.html Can give you positions, distances, and other information about a wide range of celestial objects Can give you positions, distances, and other information about a wide range of celestial objects

9. SIMBAD http://simbad.u-strasbg.fr/sim-fid.pl http://simbad.u-strasbg.fr/sim-fid.pl http://simbad.u-strasbg.fr/sim-fid.pl Provides a variety of information on individual objects, mainly on stars Provides a variety of information on individual objects, mainly on stars

12. Clear Dark Sky Predicted sky conditions for different locations and links to other useful sites Predicted sky conditions for different locations and links to other useful sites http://cleardarksky.com/c/MSUObMIkey.html?1 http://cleardarksky.com/c/MSUObMIkey.html?1

14. Satellite Predictions Heavens Above Heavens Above Can be accessed from the Clear Dark Sky website Can be accessed from the Clear Dark Sky website http://www.heavens-above.com/ http://www.heavens-above.com/

17. Variable Stars American Association of Variable Star Observers American Association of Variable Star Observers www.aavso.org General Catalog of Variable Stars http://www.sai.msu.su/groups/cluster/gcvs/gcvs/

18. AAVSO

19. SPACE WEATHER http://www.spaceweather.com/ http://www.spaceweather.com/ http://www.spaceweather.com/ http://www.sec.noaa.gov/SWN/ http://www.sec.noaa.gov/SWN/ http://www.sec.noaa.gov/SWN/ http://www.spacew.com/ http://www.spacew.com/ http://www.spacew.com/

20. SpaceWeather.com

21. Magazines Sky and Telescope Sky and Telescope http://skyandtelescope.com/ http://skyandtelescope.com/ Astronomy Astronomy http://www.astronomy.com/ http://www.astronomy.com/

22. http://www.badastronomy.com/

23. Astronomical Societies American Astronomical Society American Astronomical Society http://www.aas.org/ http://www.aas.org/ http://www.aas.org/ Has a section about astronomy as a career Has a section about astronomy as a career

24. Astronomical Society of the Pacific http://www.astrosociety. org/ http://www.astrosociety. org/ http://www.astrosociety. org/ http://www.astrosociety. org/

25. Association of Lunar and Planetary Observers http://www.lpl.arizona.edu/alpo/ http://www.lpl.arizona.edu/alpo/

26. Saturn: ALPO

27. Jupiter: ALPO

28. Astronomy Picture of the Day http://antwrp.gsfc.nasa.gov/apod/astropix.html http://antwrp.gsfc.nasa.gov/apod/astropix.html

30. Fun Webcams