  |
Views of the Solar System: Earth - http://www.solarviews.com/eng/earth.htm
Views from the space, animations, general information and data. |
| |
Info on The Planet Earth - http://www.facts-about.org.uk/science-planet-earth-planet-info.htm
Brief facts about the Earth. |
 |
Length of Day and Twilight - http://herbert.gandraxa.com/herbert/lod.asp
Describes how formulae for the calculation of the length of day can be derived for any given Northern latitude and any day of year. Also includes calculation of the twilight duration. |
| |
Windows to the Universe: Earth - http://www.windows.ucar.edu/cgi-bin/tour_def/earth/earth.html
An overview of the planet and its moon including general information, data, pictures, news, historical and mythological background. |