All of our scientific tools have limits. These limits ensure that we will never see the whole picture. We can never have complete knowledge of the universe. Above, the ESO's APEX radio telescope probes the heavens from its lonely perch on Chile's Chajnantor plateau.
In the quest to understand our world and the universe in which it sits, Marcelo Gleiser advises: "Not all questions have answers. To hope that science will answer all questions is to want to shrink the human spirit, clip its wings, rob it from its multifaceted existence."
Goddard/Arizona State University/NASA