PDA

View Full Version : APOD: An Erupting Solar Prominence from SOHO


Spartak@CPH
07-08-2006, 04:56:41
http://antwrp.gsfc.nasa.gov/apod/image/0608/sunprom_soho.jpgOur Sun is still very active. In the year 2000, our Sun went though Solar Maximum, the time in its 11-year cycle where the most sunspots and explosive activities occur. Sunspots, the Solar Cycle, and solar prominences are all caused by the Sun's changing magnetic field. Pictured above is a solar prominence that erupted in 2002 July, throwing electrons and ions out into the Solar System. The above image was taken in the ultraviolet light emitted by a specific type of ionized helium, a common element on the Sun. Particularly hot areas appear in white, while relatively cool areas appear in red. Our Sun should gradually quiet down until Solar Minimum occurs, and the Sun is most quiet. No one can precisely predict when Solar Minimum will occur, although some signs indicate that it has started already!
APOD (http://antwrp.gsfc.nasa.gov/apod/astropix.html)

Funko
07-08-2006, 08:33:23
I like the Approx size of earth.. really puts it in perspective how big the sun is.

SOHO is cool.

King_Ghidra
07-08-2006, 08:35:29
we needed that measurement in london buses

MoSe
07-08-2006, 09:41:55
how large is Soho compared to whole London?

Funko
07-08-2006, 10:30:50
Well the earth is 1,521,856 London buses wide*.


*approximate diameter according to Wombat's converter (http://www.weaver1.btinternet.co.uk/theimmortalwombat/junk/units.html)

Funko
07-08-2006, 10:34:12
And the sun is 167,024,576 London buses wide...

Colon
07-08-2006, 11:20:12
No wonder this summer has been so hot.

MoSe
07-08-2006, 11:34:13
yeah, but fast-burning:

here summer ended in July, it's been freezing cold all August

Colon
07-08-2006, 13:03:10
Maybe you live further from that flare than I do.

Funko
07-08-2006, 13:16:57
Apparently the sun has 100 times the diameter of the earth... looks like more in that picture.

Of course that means it has a million times the volume...

King_Ghidra
07-08-2006, 13:18:52
this sun goes up to 11