Observation materials.
The stars of the southern hemisphere.
The night gives way to dawn.
"That was the first time a human has ever witnessed the crashing of one heavenly body into another. It was the perfect opportunity to gain an understanding of what might happen if a comet crashed into Earth. With that in mind, I traveled to Australia, where observation conditions are excellent."
"I reached a conclusion upon witnessing numerous falling stars. I had a CCD camera at the time, but the naked eye is most trustworthy. Then a lump, or ball of light appeared from behind Jupiter, assuming maximum size after about five minutes. It seemed to be bigger than Earth. It was amazing."