"Of course it is possible that UFO's really do contain aliens as many people believe, and the government is hushing it up."

"Cosmology is the study of the large scale structure of the universe, and how it has evolved over time."

"The universe is a beautiful and complex place, and we are lucky to be a part of it."

"We are in danger of destroying ourselves by our greed and stupidity."

"The future of humanity depends on our ability to be able to make space travel possible."