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The big question: Did they leave artefacts behind for us to find?
NASAs Chandler Observatory
Winston Churchill had something to offer besides "blood, toil, tears and sweat": A willingness to consider the existence life on other planets. A newly discovered essay called "Are We Alone in the Uni...
Astronomers watch the galactic equivalent of a dog with a bone.
The “StarTalk” host offers some much-needed 'cosmic perspective'.