Curated OER
Size Does Matter
View this short clip and discover how small our universe is in comparison to the universe at large. The vastness of space is posed as analogous to the sands found on the beach. Scientists think that there are more stars in the universe...
Khan Academy
Khan Academy: Quasars and Galactive Collisions: Galactic Collisions
Collision of the Milky Way Galaxy with Andromeda (forming "Milkomeda") is featured in this video. [3:34]
Science Friday Initiative
Science Friday: New Milky Way Measurements
The Milky Way galaxy is bigger, heavier, and faster-spinning than researchers once thought.