The Seeker

If a pair of entangled photons is created in nature, how does an observer know that he / her is observing a actual pair of entangled photons? I can understand how we determine that a pair of photons is entangled in the lab, but in nature /space?

I think that I would like to see a picture of your lab, sounds cool. I wish I had a jump shower and fume hood at home. :) Are you contemplating building rockets? I thought that vacuum distillation was the preferred way to concentrate Hydrogen Peroxide?