Below you can find the Konstantin tsiolkovsky who predicted space travel would have been 100 when this was launched in october 1957 Jeopardy Words Answer. The answer to Konstantin tsiolkovsky who predicted space travel would have been 100 when this was launched in october 1957 has 7 letters. This clue belongs to the Russian science category and is part of Jeopardy Word Level 1064. If you scroll near the bottom you will find other clues and answers part of level 1064