Churchill was clearly the indispensable man of the moment in 1940, whom destiny summoned to change the course of history. His overwhelming love of country and civilization, grave sense of obligation to protect and improve on all the good the ages had produced, romantic view of the world, and keen understanding of how history had reached a vital point, made him realize why he and Britain had to battle relentlessly, regardless of the odds. His firm conviction that individuals can overcome great adversity, his belief that great leaders can redirect global forces, and his uplifting oratorical abilities, allowed Churchill to shape the thoughts and feelings of his countrymen and save his country and civilization.
Chemical changes inside Mars' core caused it to lose its magnetic field. This, in turn, caused it to lose its oceans. But how?
A more distant galaxy liked the lens so much that it went and put a ring on it. Here's the science behind this remarkable cosmic object.