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(THE CONVERSATION) Editor’s note: What started as an internet joke has generated a stern military warning after more than a million people “signed up” to “raid” Area 51 – a secretive military installation in Southern Nevada long fancied by conspiracy theorists to be hiding evidence of a crashed UFO with aliens. The purpose of the planned raid is in order to “see them aliens.” In the following Q&A, astronomy professor Jason Wright discusses the public’s interest in answering the age...