Astronomy Online

 

Chairman: David Bushnell

dbushn@swbell.net

925/838-3914

     Co-Chairman: Larry Lange  
925/254-6281      

rllange@pacbell.net

 

 

If you would like to get daily emails about science, please respond to me at dbushn@swbell.net. I get them from Sigma Xi SmartBrief, where they have been “down-edited” to language we can all understand. David Bushnell, Chairman and Editor.

If you would like to get the semi-daily emails about astronomy, please respond to me at dbushn@swbell.net. I get them from Sigma Xi SmartBrief, where they have been “down-edited” to language we can all understand.
 

 

 

 

 

Scroll down for recent reports and links

 
 
 
 
 A Brief Description of Dark Matter
 
 

 
A good question!….answered
 

 

Time Dilation (8 min.) – background for 03/09/2015 Meeting
 

 
How Stars Shine(2 min)
 

 
What is Gravity? Newton vs. Einstein (7 min)
 
 

 
 
 
A Brief (12 min) Description of Kepler’s Laws:

 

About the Particle Properties of Light:The Wave/Particle Double Split Experiment Explained:

 

 
On Photons and Relativity:
 

 
The Photon and Light as a Particle:
 
 

 
 

To review the announcement 0n evidence of cosmic inflation and gravitational waves click on Big Discovery. For background information also click on the links at the end of the article. ..also a video lecture on the Celestial Sphere

Activity Costs:

For regular meetings – little or no cost.  For field trips – each participant pays the related admission and docent charges as well as food and other related costs and also provides their own transportation.

updated 6/02/2024 MLF