The Sun

Nov 4, 2016

On August 31, 2012 a long filament of solar material that had been hovering in the sun's atmosphere, the corona, erupted out into space at 4:36 p.m. EDT. The coronal mass ejection, or CME, traveled at over 900 miles per second. The CME did not travel directly toward Earth, but did connect with Earth's magnetic environment, or magnetosphere, causing aurora to appear on the night of Monday, September 3.
Credit NASA Goddard Space Flight Center

On this episode of Our Island Universe: How do we know that the sun is made of Hydrogen and Helium?

Shanil Virani, Director of the John C. Wells Planetarium in Harrisonburg, VA.

Follow on Twitter as shanilv