To make this journey, we'll need imagination but imagination alone is not enough because the reality of nature is far more wondrous than anything we can imagine. This adventure is made possible by generations of searchers strictly adhering to a simple set of rules. Test ideas by experiment and observation. Build on those ideas that pass the test, reject the ones that fail, follow the evidence where ever it leads and question everything. Accept these terms and the cosmos is yours...
-Neil deGrasse Tyson
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