Is it possible to create a perfect vacuum? - Rolf Landua and Anais Rassat
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Dark energy has you perplexed? This video, What exactly is Dark Matter and Dark Energy?, might help. Here is a TED Talk by physicist Patricia Burchat: Shedding Light on Dark Matter.
The LHC-Large Hadron Collider discussed in this lesson is an amazing device. Watch this TED Talk by Brian Cox who provides a down to Earth discussion of how it works.
This TED-Ed lesson may also help fill in any voids you have on cosmic radiation: How cosmic rays help us understand the universe - Veronica Bindi.
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