It should come as no surprise that the three unmanned missions scheduled for launch to Mars this year have their own Web sites. Each site provides updated information on the status of the mission as it approaches lau nch. The Mars Pathfinder and Mars Global Surveyor sites have also provided live pictures of the spacecraft while undergoing launch preparations. The Mars96 site, despite its Russian location, is completely in English and has otherwise hard-to-find informa tion on this mission.

Mars Global Surveyor:

http://mgs-www.jpl.nasa.gov/

Mars Pathfinder:

http://mpfwww.jpl.nasa.gov/

Mars96:

http://www.iki.rssi.ru/mars96/mars96hp.html

It's been thirteen years since the Saturn V lifted off for the last time, but the intervening years have not diminished interest in this powerful rocket. This Saturn V Web site has detailed technical information and illustrations on the different versions of the Saturn V. Modelers will find the commentary on the different models of the rocket, and the flaws in those models, very helpful. And, of course, there are lots of pictures and even sounds of the rocket launchi ng.

http://www.calweb.com/~ccorway/saturn-v.htm

The Astronomy Picture of the Day is just that: a different picture of a planet, star, galaxy, or other celestial body that changes each day. Expert commentary on the pictures, including links to related resources, by professional astronomers add to the educational value of the site. The archive of past pictures is searchable, so you can easily find the pictures from past days. If you surf the Web on a daily basis, the Astronomy Picture of the Day is a great place to start.

http://antwrp.gsfc.nasa.gov/apod/astropix.html

The National Space Society has just released its Presidential and Congressional Voters Guide. Its purpose is to inform about issues currently related to America's space program and to report the positions of the pres idential and congressional candidates. It provides an overview of the major issues facing NASA and the policy positions voiced by Bill Clinton and Bob Dole. The guide also offers an overview of voting trends in Congress, support of space by states, politi cal party platforms, and a listing of key votes by members of Congress.

http://www.nss.org/voters_guide/