H. T. Stetson

ASTRONOMY NOW SOLVING STAR DISTANCE PROBLEMS BY RECENTLY DEVELOPED METHOD WITH GREAT FUTURE

By H. T. Stetson June 09, 1922

One of the greatest problems that confronts astronomers at the present time is an accurate knowledge of the distances of

By Instructor IN Astronomy. and H. T. Stetson February 26, 1920

During the past six months six new stars or "novae" have been discovered at the Harvard College Observatory. These interesting