The fate of aviation was up in the air until our powered heavier-than-air airplane took off one day in December 1903 ... "
The Wright brothers
Liliputins. What, the heck, is this ?
http://www.stihi.ru/2012/08/18/5368
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up in the air (about someone or something)
Fig. undecided about someone or something; uncertain about someone or something. I don't know what Sally plans to do. Things were sort of up in the air the last time we talked. Let's leave this question up in the air until next week.
See also: air, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
up in the air
not decided or completely developed We have no idea which school she'll be attending in September - everything is still up in the air. Will a strike take place? That's up in the air.
Related vocabulary: leave something hanging
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take off
noun
1. a taking or setting off; the leaving of the ground, as in leaping or in beginning a flight in an airplane.
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The Wright brothers
From Wikipedia, the free encyclopedia
The Wright brothers, Orville (August 19, 1871 – January 30, 1948) and Wilbur (April 16, 1867 – May 30, 1912), were two American brothers, inventors, and aviation pioneers who were credited[1][2][3] with inventing and building the world's first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight, on December 17, 1903.