"The thing that boggles my mind is that a photon was emitted from the center of a star 13.5 billion years ago, and it traveled--through some miracle--unobstructed through its own galaxy, and past an unimaginable number of galaxies, stars, dust clouds, planets, nebulae, and somehow it landed in our galaxy. In our solar system. around our planet. and somehow that photon ended up not only hitting that tiny telescope, but hitting the exact spot of the light sensor that is only a few inches in area, and that was only pointed in that direction for a few moments." -enotzen