Cedar Amateur Astronomers Public Night

  • Details

  • 12/10/22
  • 7:30 p.m. to 8:30p.m. -
  • Free
  • All Ages
  • Categories

  • Hobby

Event Description

Learn more about the stars as Cedar Amateur Astronomers will host a virtual public event at 7:30 p.m. on December 10. This event is Zoom only. Go to cedar-astronomers.org/events for more information.

 Professor Steven Spangler will present "Understanding the Main Sequence of Stars." If you look at the night sky, you notice that stars vary greatly in their brightness.  There are also subtle differences in color, with some being visibly red, and others white to bluish.  It makes sense that some stars are brighter because they emit more light (like a 100 Watt light bulb emits more light than a 10 Watt bulb), and others because they are closer to us.  If you know the distance to a star, you can determine how naturally bright it is.  About 100 years ago, astronomers made a graph of the natural brightness of stars against the color, and made a major discovery.  Professor Spangler will describe what this discovery was, and how it leads to the scientific term "main sequence" for stars. This event is on Zoom only. Log in information will be available at cedar-astronomers.org/events