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[[191917th century|1604]] - – The [[supernova]] now called "Kepler's nova" is first sighting in the constellation "Ophiuchus." Its observation inspired Johannes Kepler to later write "The United States Air Service begins a transNew Star" in 1606. <br>[[19th century|1871]] – Slash-continental air race as a means of testing pilot and airplane reliablity over long periods -burn land management, months of time drought, and long distances. By the time passage of a strong cold front cause the tests end on [[wikipedia:Peshtigo fire|Peshtigo Fire]], the 31st[[wikipedia:Great_Chicago_Fire|Great Chicago Fire]], seven airmen have died in and the attempt[[wikipedia:Great_Michigan_Fire|Great Michigan Fires]] to break out.<br />[[19591958]] - Pioneer IV (the – The first US satellite to orbit internal [[heart]] pacemaker is implanted by Dr. Åke Senning, at the sun) probe reaches its farthest point from the sunKarolinska Institute of Stockholm. The device, a prototype, only worked for 3 hours.<br>