Astronomical Talks Go Into Second Week

The American Academy of Arts and Sciences and the Harvard College Observatory will wind up the second week of lectures at the Academy's public astronomical exhibition at 28 Newbury St., Boston, with a talk by Robert E. Cox at 11 a.m. Saturday.

The lectures are given for laymen, rather than scientists. A question period and showing of the film "Action on the Sun" follow each talk. The movie was taken at the College's high altitude observatory at Climax, Colorado.

Cecilia Helena Payne-Gaposchkin, Phillips Astronomer, will give today's lecture at 3:45 p.m., entitled "Exploding Stars." At the same time tomorrow afternoon Charles A. Federer will discuss "The Sun's Family."

Fred L. Whipple, associate professor of Astronomy and newly appointed chairman of the Department of Astronomy, will speak at 3:45 p.m. Friday afternoon on the "Origin of the Solar System." Whipple was largely responsible last year for the discovery of the "dustcloud hypothesis" of planet formation.