How well do you know your Winter Sky? DanSmitsSalon does!

Winter Constellations Trivia Quiz This constellation contains the first eclipsing variable discovered (Algol) It is also the radiant for one of the best meteor showers, this one from Comet Swift-Tuttle, peaks August 11-12. This constellation contains an Open Cluster (OC) whose Japanese name is Subaru It’s also the site of the 1054 Supernova that created … More How well do you know your Winter Sky? DanSmitsSalon does!

Astrophysics for People Who Have Time

Astrophysics for People Who Have Time? After reading Neil DeGrasse Tyson’s new book Astrophysics for People in a Hurry, I began to wonder.   What information was left out for brevity’s sake? What questions were left unasked, or unanswered? What topic and concepts were glossed over or ignored all together? I enjoyed this book; I enjoy … More Astrophysics for People Who Have Time

Time

Time What do we call the duration of 9, 192, 631, 770 cycles of the radiation from the transition between two hyperfine levels n the ground state of caesium -133? Answer:   A second What do we call the time between successive transits of the Sun across an observer’s meridian? Answer: apparent solar day What do … More Time