With the launch by the U.S.S.R. of the first artificial satellite, Sputnik, on October 4, 1957, the space age was inaugurated. Now, a symposium will mark the 25th anniversary of that launch with a review of the origins, motivations, and progress of the era.

The National Academy of Sciences and the Smithsonian Institution's National Air & Space Museum will host ‘25 Years in Space’ on October 14. The day-long symposium, to be held at the Academy auditorium at 2100 C St., N.W., Washington, D.C., will feature three major sessions: motivations for space activity, the practical dimensions of space, and science and space. Also on the agenda is a special program on the space age and the arts. Harvey Brooks of Harvard University, Simon Ramo of TRW, Inc., and Freeman Dyson of Princeton's Institute for Advanced Study will lead these sessions. Closing remarks will be presented by Philip Morrison of the Massachusetts Institute of Technology.