21.   Cosmonauts Anatoly Solovyev and Pavel Vinogradov and American astronaut Mike Foale replaced a data exchanger that was blamed for the computer breakdown.

22.   Dr. Jerry M. Linenger, an American astronaut on board, grabbed an emergency mask, but no oxygen came out.

23.   Dr. Lucid is the second American astronaut to live on the Mir station.

24.   First, the Russians complained that Dr. Andrew S.W. Thomas, the American astronaut, was a malcontent for saying his emergency spacesuit was too small.

25.   Foale is due to be replaced by another American astronaut, Wendy Lawrence, in September.

26.   Glenn, a four-term senator, was the first American astronaut to orbit the Earth.

27.   Further, an American astronaut was aboard, fueling interest on the part of American news organizations.

28.   He plays a member of the American astronaut team on the first manned flight to Mars.

29.   He oversaw the teams that built the capsules for the initial flights of American astronauts.

30.   His assessment was all but ignored, Hammond said Wednesday in an interview, and American astronauts have continued to live and work on board Mir.