More than a thousand years before Copernicus, the Greek astronomer Aristarchus postulated that the sun was at the center of the solar system, not the Earth. He lived 23 centuries ago between 310 and ...

On a July evening in 1976, I trained a 3-inch reflecting telescope on a 9th-magnitude star a little less than 1° northwest of the 5th-magnitude star 66 Ophiuchi. As accurately as possible, I made a ...

Publications of the Astronomical Society of the Pacific, Vol. 28, No. 165 (August-October, 1916), pp. 207-208 (2 pages) ...

We assume that the stars' positions in the heavens are eternal. But everything in space is in motion. As our Milky Way rotates, our sun is carried once around the galaxy every 250 million years, ...

DWARF STARS.—In the course of an article which appears in the November issue of Scientia, Dr. A. C. D. Crommelin discusses the evidence which suggests that dwarf stars are the most numerous class of ...

“I am constant as the northern star, Of whose true-fix’d and resting quality There is no fellow in the firmament.” Julius Caesar (III, i, 60 – 62) Shakespeare was a decent writer, but an astronomer he ...