Monday, September 30, 2013

Comet ISON Visibility Map

Global visibility map of Comet ISON, which is a potential "comet of the century".
If ISON puts on an incredible show, it could be visible by as early as October and as late as January. But these are the times and location when ISON is most likely to be visible.

Click to enlarge

Source: HubbleSite - ISONblog

Tuesday, September 24, 2013

Geography of China

Geographic regions of China with elevation.

 Click to enlarge

By en:User:Alanmak Alan Mak [GFDL  or CC-BY-SA-3.0, via Wikimedia Commons