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About how warm is deep space's background radiation?

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  1. 273 kelvins
  2. 2.725 kelvins
  3. 2,725 kelvins

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References

  1. Aerospace Dimensions Module 5, Space Environment akwg.cap.gov/media/cms/Module_5__Space_Environment_C640727DEF762_83c5b.pdf Checked 2026-10-10.

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