PDA

View Full Version : How the Sun Flips its Field



Fraser
2005-Sep-10, 04:59 PM
SUMMARY: Astronomers have known for a while that the Sun is on an 11-year cycle where it eventually flips its magnetic field, but new observations from the Solar and Heliospheric Observatory (SOHO) help show this process in action. Over the course of the cycle, the Sun fires off more than a thousand coronal mass ejections which carry away the Sun's magnetic field. This allows a new flipped magnetic field to form. When SOHO first started observing the Sun in 1996, our star was relatively quiet - since then the Sun has gotten quite active, and this has given solar astronomers a chance to see how this process unfolds over time.

View full article (http://www.universetoday.com/am/publish/sun_flips_its_field.html)
What do you think about this story? post your comments below.