24 Hour 360 Degree Little Planet

Visualizing an entire day on a single photo, photographer Chris Kotsiopoloulos captured this amazing stereographic projection in Sounio, Greece. The photo consists of hundreds of photos, taken during a mammoth 30-hour photo shoot, digitally stitched together to represent an entire rotation of the Earth. Images taken at night compose the bottom half of the picture, with star trails lasting as long as 11 hours. Contrasting, images taken during the day compose the top of the image, with the Sun being captured once every 15 minutes.

Chris Kotsiopoloulos has also provided a detailed tutorial on how this picture was made.
Via Colossal