Area 51
Largest area 51 research web site; photos of the top secret groom lake air force base, maps, visitor information, scanner frequencies and more
http://www.area51info.net/index_en.html
Graancirkels
Circlemakers: home of england's crop circle makers. making the world a more interesting place.
http://www.circlemakers.org/
Onderwerp behandeld op school
This activity shows how to map a magnetic field, and to find how a bar magnet's field combines with the earth's magnetic field to form a complex resultant field.
http://www.eduref.org/cgi-bin/printlessons.cgi/virtual/lessons/science/earth_science/ear0022.html
Seti Nederland
Seti Nederland
http://www.seti.nl/
Wikipedia
Wikipedia
http://en.wikipedia.org/wiki/sargasso_sea