fun fact :: days names - who ? what?

I must be missing a lot of brain cells because I don't remember learning this  fun fact in grade school.
Who named and what meaning do the days of the week have? 

 calendar via scriptorium

The Greeks named the week days after the sun, the moon and the five known planets, which were in turn named after the gods Ares, Hermes, Zeus, Aphrodite, and Cronus. The Anglo-Saxons, who invaded Britain hundreds of years ago, adopted this idea but substituted their own gods. The English language has inherited and changed those names a bit, but the ones we use today are very similar:

* Sunday: Sun's Day. The Sun gave people light and warmth every day. They decided to name the first (or last) day of the week after the Sun.

* Monday: Moon's Day. The Moon was thought to be very important in the lives of people and their crops.

* Tuesday: Tiw's Day. Tiw, or Tyr, was a Norse god known for his sense of justice.

* Wednesday: Woden's Day. Woden, or Odin, was a Norse god who was one of the most powerful of them all.

* Thursday: Thor's Day. Thor was a Norse god who wielded a giant hammer.

* Friday: Frigg's Day. Frigg was a Norse god equal in power to Odin.

* Saturday: Seater's Day or Saturn's Day. Saturn was a Roman god.

An interesting fun fact that is JUST COOL!