Physics

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Across
  1. 5. Closest O Type star
  2. 6. A dense core that can be left after a supernova
Down
  1. 1. The explosion that causes GRBS
  2. 2. The absence of light that can be left after a supernova
  3. 3. Gamma rays have the highest _____
  4. 4. Gamma rays have the shortest _____