PDA

View Full Version : Ep. 196: Luminosity and Magnitude



Fraser
2010-Sep-13, 06:20 PM
Astronomers measure the brightness of stars as magnitude. But this brightness depends on the distance to the star as well as the total amount of energy it's pumping out into space. And from our vantage point here on Earth, appearances can be deceiving.http://feeds.feedburner.com/~r/astronomycast/~4/LnPU_5FsY64

More... (http://feedproxy.google.com/~r/astronomycast/~3/LnPU_5FsY64/)

swampyankee
2010-Sep-16, 10:51 AM
Why did Episode 196 get released after Ep 197?