The Stellar Heavens: An Introduction to the Study of the Stars and Nebulæ (Classic Reprint) - Tapa blanda

Sinopsis

Excerpt from The Stellar Heavens: An Introduction to the Study of the Stars and Nebulæ

The constellations-number of Stars - Star Magni tudes - Colours of Stars Spectra - Parallax and Distance - Absolute Size - Proper Motions - The Sun's Motion in Space.

The Constellations, - The stars Visible to the naked eye have been divided into groups, called constellations. These are now chiefly used for the purpose of reference, but in ancient times they were associated with the figures of men and animals, etc. The origin of these constella tion figures is somewhat doubtful, but they are certainly of great antiquity. Ptolemy's constellations were 48 in number, but different writers, from the first century b.c., give various numbers, ranging from 43 to 62. Bayer's Atlas, published in 1603, contains 60, 12 new constella tions in the Southern Hemisphere having been added by Theodorus to Ptolemy's original 48. The present number is 84. Bayer's Atlas was the first to show the Southern sky, and the first to designate the brighter stars by the letters of the Greek alphabet, a (alpha.

About the Publisher

Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com

This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

"Sinopsis" puede pertenecer a otra edición de este libro.