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NASA | Fermi Explores the Early Universe
| Content Provider | WatchKnowLearn |
|---|---|
| Description | This animation tracks several gamma rays through space and time, from their emission in the jet of a distant blazar to their arrival in Fermi's Large Area Telescope (LAT). During their journey, the number of randomly moving ultraviolet and optical photons (blue) increases as more and more stars are born in the universe. Eventually, one of the gamma rays encounters a photon of starlight and the gamma ray transforms into an electron and a positron. The remaining gamma-ray photons arrive at Fermi, interact with tungsten plates in the LAT, and produce the electrons and positrons whose paths through the detector allows astronomers to backtrack the gamma rays to their source. There is no narration, just a soundtrack. |
| Language | English |
| Access Restriction | Open |
| Rights License | Public Domain |
| Subject Keyword | k-12 homeschool homeschooling Cosmology home school parents educational videos k12 preK-12 Astronomy Science |
| Content Type | Video |
| Educational Role | Student Teacher |
| Educational Use | Self Learning |
| Time Required | PT1M46S |
| Education Level | Class VIII Class XI Class IX Class XII Class X |
| Resource Type | Video Lecture |
| Subject | Space Science |
