Distance from the sun and other planets. http://www.earthmatrix.com/extract62/mercury.html

Evening sky tonight at Sky and Telescope. http://skyandtelescope.com/  or http://spaceweather.com/

Mars Rover Mission from this N.A.S.A Web Site. http://marsrovers.jpl.nasa.gov/home/index.html

NASA Photos- http://antwrp.gsfc.nasa.gov/apod/archivepix.html

(NASA) National Aeronautics and Space Administration. http://www.nasa.gov/home/

Night Sky Network- http://nightsky.jpl.nasa.gov/

Take a trip to Mars: http://marsprogram.jpl.nasa.gov/funzone_flash.html