2 results for author: Larry Stookey


ANDROMEDA IN THE NOVEMBER SKY

Astronomers estimate that the presently observable universe contains about one hundred billion galaxies. These are very large groups of stars (see the 10/07/19 article by James Lewis) held together by gravity. They exist in difference shapes and can be spiral, elliptical, lenticular, or irregular. Our own galaxy, the Milky Way, and its nearest full-size neighbor, the Andromeda galaxy, are both spiral galaxies. We used to think that the Andromeda galaxy was two to three times as large as our galaxy, but recent (2018) radio astronomy data shows that they are about the same size. The Andromeda galaxy is about two and one-half million light ...

OBJECTS IN THE SKY

The best times for viewing stars and planets in September 2019 are the beginning and ending days of the month. A new moon occurs on August 30 and again on September 28 when Earth’s moon is so close to the Sun that they both set at almost the same time. Skies will be darker at these times. In contrast, a full moon occurs on September 13, making it more difficult to see fainter objects. September is a good time to see the Summer Triangle, an asterism of three of the brightest stars in the sky. An asterism is a group of stars that are associated in some way but are not considered to be a constellation. Even when the moon is ...