Crash Course
Star Clusters
Last week we covered multiple star systems, but what if we added thousands or even millions of stars to the mix? A star cluster. There are different kinds of clusters, though. Open clusters contain hundreds or thousands of stars held...
Curated Video
Exploring the Stars: A Journey through the Milky Way
In this video transcript, the teacher introduces the concept of the Milky Way and discusses some major stars within our galaxy. The teacher engages the students with fun facts and encourages them to explore the night sky, sparking...
Curated Video
What Constellations Mean to Different Cultures
The stars have guided and entertained us for thousands of years. Here we explore some of the messages people have seen in the stars through the millennia and look forward to how we might relate to the stars in the future.
NASA
NASA | Computer Model Shows a Disk Galaxy's Life History
This cosmological simulation follows the development of a single disk galaxy over about 13.5 billion years, from shortly after the Big Bang to the present time. Colors indicate old stars (red), young stars (white and bright blue) and the...
Professor Dave Explains
The Formation of the Milky Way Galaxy
Now that we've learned about the first ten billion years in the development of the universe, it's time to get a little more specific to our own species. We live in a galaxy called The Milky Way. When did it form, and how? Where is it...