8a./25a. A scientific sounding rocket (7) S - Y L - - - 15a. Uses oxygen in spacecraft? (8) - - - A - H - S 1d. Attachments to give rocket stability (4) - I - S ...is that "fins"? 12d. It is 22 down as astronauts enter space...(3) A - - 22d. See 12d, (4) R - - -