Crossword clues for the word: SPACELAB The word SPACELAB has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for SPACELAB Showing 1 to 6 of 6 results Clue(s) Microgravity laboratory first flown into space on the Space Shuttle Columbia in 1983 Mir room Setting of 1990s microgravity experiments Shuttle facility Site of extraterrestrial experimentation Site of zero-gravity experiments