ISS

Current position and Live Streams

Go to its own page. Version with no autoload of streams.

Information

AstroCosmonauts usually stay for up to 5½ months, but two of them are staying one year in orbit: American Astronaut Scott Kelly and Russian Cosmonaut Mikhail Kornienko.
View the current crew.
NASA website: facts and figures about the ISS.

The moon, Apollo 11

Explore the landing site.

Other links

Nasa web TV

Upcoming events
Channels: public - education - media - iss (or there on ustream)
Alternate streams sources: public - education - media (m3u8 files, use VLC)

Misc

Week in images (ESA website): nice pictures with explanations.
Definition of Inertial Cartesian Coordinate System: on NASA website
Definition of Two-line Element Set Coordinate System (aka TLE): on NASA website