I still find the Google Sky interface less appealing than some dedicated planetarium software I’ve tried, but I’m still interested in the most recent updates, including, among other things, imagery from space-based telescopes and imagery layers from 17th-century celestial maps. (Were these orthorectified? The Cassini overlay is surprisingly close; since it was apparently originally a globe, it’s also inverted.) See also Google Earth Blog and Using Google Earth.

Note also that, as of last month, the Google Maps API now supports map tiles for the Moon, Mars and the night sky. Astronomy web sites might be able to do something with that, I think.

Previously: Sky in Google Earth.