103,539 subscribers and counting ...
The great circles of the ecliptic and celestial equator intersect at the equinox points, and the great circle of the galactic equator near the solstice points
Matt Daniel's WeatherGlobe
Tsunami warning issued after 8.2 quake in Chile
Blogus scientificus by Alex Reshanov
Do microbes spoil food to avoid sharing?
Earth Trekker by Deanna Conners
How to spot the International Space Station