Astronomer who have discovered the initial pulsar and observed the bands of Saturn. As a result of this the distance in Saturn’s A Band is known as after him. He didn’t attend college between then age groups of twelve and twenty, and for the reason that period he developed a pastime in astronomy. He founded the Astrophysical Journal with George Hale. He wedded Cora Matthews in 1891 as well as the couple got a boy and daughter collectively. He researched and photographed the nebulae cataloged by William Herschel.