Solar Prominence Unfurls (11 years' of APODs) (04 Oct 2008)

[neufer]

2008 http://antwrp.gsfc.nasa.gov/apod/ap081004.html
2004 http://antwrp.gsfc.nasa.gov/apod/ap040620.html
2004 http://antwrp.gsfc.nasa.gov/apod/ap040330.html
2003 http://antwrp.gsfc.nasa.gov/apod/ap030707.html
2003 http://antwrp.gsfc.nasa.gov/apod/ap030418.html
2002 http://antwrp.gsfc.nasa.gov/apod/ap051109.html
2002 http://antwrp.gsfc.nasa.gov/apod/ap060807.html
2001 http://antwrp.gsfc.nasa.gov/apod/ap010924.html
2001 http://antwrp.gsfc.nasa.gov/apod/ap010301.html
2000 http://antwrp.gsfc.nasa.gov/apod/ap000309.html
2000 http://antwrp.gsfc.nasa.gov/apod/ap030223.html
2000 http://antwrp.gsfc.nasa.gov/apod/ap080601.html
1999 http://antwrp.gsfc.nasa.gov/apod/ap060416.html
1999 http://antwrp.gsfc.nasa.gov/apod/ap990708.html
1997 http://antwrp.gsfc.nasa.gov/apod/ap971120.html
1997 http://antwrp.gsfc.nasa.gov/apod/ap970918.html

[waterfeller]

Can anyone tell me the time span of the video? Is it several hours? I am guessing that the altitude of the prominence is about 200,000 miles but would also like to know the scale of the image in the video.

[orin stepanek]

Hi Art! Here's another one!

http://apod.nasa.gov/apod/ap060710.html

How do you like your eggs? Sunny side up?

Orin

[orin stepanek]

Served sunny side up.

http://www.spacetoday.org/images/Hubble ... xyNASA.jpg

Orin

[neufer]

Can anyone tell me the time span of the video? Is it several hours? I am guessing that the altitude of the prominence is about 200,000 miles but would also like to know the scale of the image in the video.

Prominence ejecta have solar wind type speeds of ~ 400 km/s:
http://www.britastro.org/jbaa/archive/promin.htm

• ----------------------------------------------------------
  <<The Sun's corona, or extended outer layer, is a region of plasma that is heated to over a million Celsius. As a result of thermal collisions, the particles within the inner corona have a range and distribution of speeds described by a Maxwellian distribution. The mean velocity of these particles is about 145 km/s, which is well below the solar escape velocity of 618 km/s. However, a few of the particles will achieve energies sufficient to reach the terminal velocity of 400 km/s, allowing them to feed the solar wind. At the same temperature, electrons, due to their much smaller mass, obtain escape velocity and build up an electric field which tends to further accelerate ions - charged atoms - away from the Sun.>> - http://en.wikipedia.org/wiki/Solar_wind