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Listed under:  Science  >  Earth and space  >  Universe  >  Galaxies
Interactive

Night Sky Quiz

This is a ten question multiple choice quiz that gives students feedback on their understanding of about the nature of the night sky and the universe. A useful resource to determine what students already know or to promote discussion. Feedback provides some excellent explanations.

Video

Threshold 2: The Stars Light Up

This short video gives an overview of the emergence of the first atoms, hydrogen and helium, 380,000 years after the Big Bang. The effects of gravity led to tiny variations in the density of matter throughout the Universe, which in turn became heated, resulting in fusion and the emergence of the first stars, galaxies, and ...

Video

Very Large Telescope

This 10 minute video segment from Catalyst explains why the telescope is located where it is and relates it to the properties of light.