what is beyond cosmic ocean?
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Humans are fascinated by the Universe. As an exploratory and highly imaginative species, we are fascinated by the vastness of its uncharted territory and the infinite possibilities as to what we could find lurking in the unknown. We are almost equally excited by the challenge of finding a way to get there.
The size of the Universe nearly overwhelms human ambition. We are aware, at least, that it is mind-bogglingly huge. "The size and age of the cosmos are beyond ordinary human understanding; lost somewhere between immensity and eternity is our tiny planetary home, the earth," says Carl Sagan in Episode 1 of his series Cosmos, "The Shores of the Cosmic Ocean."
This immensity is enough to keep our curiosity of what is beyond the known universe ever-present, and our imaginations active. "We wish to pursue the truth no matter where it leads, but to find the truth, we need imagination and speculation both. We will not be afraid to speculate. But we will be careful to distinguish speculation from fact," says Sagan.
Gradually, as we move forward, some of our speculation turns to fact, and some of our speculation is dismissed by it. When Jules Verne wrote From the Earth to the Moon in 1865, he put forth many speculative ideas about the moon. Could it be inhabited? Could it have a breathable atmosphere? We have learned since that both of these ideas were nothing more than speculative; they have been dismissed by fact. But although Verne's ideas about space flight itself were very much scientifically off, we nonetheless made our own manned voyage to the moon just a century later--and we notice a lot of parallels.
Sagan notes, "There was once a time when our little planet seemed immense, when it was the only world we could explore." We explored it avidly, conquering oceans and finding efficient means of travel over land. And when we had mapped our world the best we thought we could (even this seems to be constantly improving), we turned our attention instead elsewhere. To beyond our little planet.
We may not have ventured very far; but we have made astounding accomplishments in forming an image of our Universe and understanding as well as we can where we are within it. Sagan tells that some objects in our very own solar system, such as the rings of Uranus and Pluto's moon Charon, were not discovered until the late seventies. Compared to the seventies, we've come an immensely long distance. Sagan likens space exporation to exploring an ocean: "The surface of the earth is the shore of the cosmic ocean. On this shore, we've learned most of what we know." The American Museum of Natural History has made an amazing, mind-blowing video to illustrate just how much we have managed to piece together from our tiny speck of a vantage point:
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