This is a scrapbook of ideas. One can hardly call it a blog, but I maintain it to file away things I find interesting, like shiny pebbles.

What does the Moon’s North Pole look like?

The Moon's North Pole

This image of the moon’s north polar region was taken by the Lunar Reconnaissance Orbiter Camera, or LROC. One of the primary scientific objectives of LROC is to identify regions of permanent shadow and near-permanent illumination. Since the start of the mission, LROC has acquired thousands of Wide Angle Camera images approaching the north pole. From these images, scientists produced this mosaic, which is composed of 983 images taken over a one month period during northern summer. This mosaic shows the pole when it is best illuminated, regions that are in shadow are candidates for permanent shadow.

September 2011

Geotagged internet

Europe – red dots are locations of Flickr pictures. Blue dots are locations of Twitter tweets. White dots are locations that have been posted to both.

Full set on Flickr

August 2011