Earth&Space

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Cell Size and Scale

http://learn.genetics.utah.edu/content/begin/cells/scale/ Some cells are visible to the unaided eye
http://www.moonzoo.org/how_to_take_part

Moon Zoo - How To Take Part

How To Take Part
http://www.thejunction.de/online/2010/06/21/stadtkarten-fur-geotagger-0018964 Georeferenzierung ist ja gerade der neuste Schrei.

Stadtkarten für Geotagger - TheJunction

If you are interested in the Moon or the Apollo landings, you can find and read a lot of Moon-related material online. http://www.makeuseof.com/dir/google-moon-tour-earths-moon-virtually-web-browser/

Google Moon: Explore The Moon Virtually From Your Web Browser

Azimuth in the above table follows the astronomical convention: zero degrees is South with positive angles toward the West and negative angles toward the East.

Sternenkarten

http://www.fourmilab.ch/cgi-bin/Yourhorizon?lat=49.600000&lon=353.800000&azimuth=0&z=2&elements=

SETI@home

http://setiathome.ssl.berkeley.edu/ Weekly Outage and Initial Catch Up
http://server6.wikisky.org/?img_source=IMG_905270:all&ra=0.687969&de=41.14449&zoom=7&show_box=1&box_ra=0.687969&box_de=41.14449&box_width=50&box_height=50

Interactive Sky Map

The Carina Nebula (also known as the Great Nebula in Carina, the Eta Carinae Nebula, or NGC 3372) is a large bright nebula that surrounds several open clusters of stars.