Each continent is (partially) shown here as seen from a satellite. The images are a "patchwork" of several different satellite images, which explains the lack of clouds. They are all taken at the same hour (noon or close), so there are almost no shadows.

Africa - Large version
Asia - Large version
Australia - Large version
Europe - Large version
North America - Large version
South America - Large version
Antarctica - Large version
Images taken from
UNEP (2003), ISBN: 92-807-2272-5
Selected Satellite Images of Our Changing Environment.
Document available online as 13 MB PDF file: