APOD: Large Eruptive Prominence Imaged by... (2010 Apr 18)

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APOD: Large Eruptive Prominence Imaged by... (2010 Apr 18)

Post by APOD Robot » Sun Apr 18, 2010 3:51 am

Image Large Eruptive Prominence Imaged by STEREO

Explanation: What's happened to our Sun? Last week, it produced one of the most power eruptive prominences ever seen. Pictured above, the prominence erupted in only a few hours and was captured in movie form by NASA's twin Sun-orbiting STEREO satellites. A quiescent solar prominence is a cloud of hot solar gas held above the Sun's surface by the Sun's magnetic field. Unpredictably, however, prominences may erupt, expelling hot gas into the Solar System via a Coronal Mass Ejection (CME). As pictured above, many Earths would easily fit under the expanding ribbon of hot gas. Although somehow related to the Sun's changing magnetic field, the energy mechanism that creates and sustains a Solar prominence is still a topic of research.

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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by bystander » Sun Apr 18, 2010 4:02 am


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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by tesla » Sun Apr 18, 2010 4:11 am

A magnetic field can only be generated by an electric current. This is basic electrical theory. What is really happening with the Sun?

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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by Chris Peterson » Sun Apr 18, 2010 4:24 am

tesla wrote:A magnetic field can only be generated by an electric current. This is basic electrical theory. What is really happening with the Sun?
A magnetic field does not require an electric current. However, in the case of the Sun (and all magnetically active stars) the magnetic field is produced by currents flowing through conductive plasmas that move due to convection and to differential rotation. While many details remain uncertain, the basic principle involved is not all that complex, and is not controversial.
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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by hstarbuck » Sun Apr 18, 2010 5:05 am

Not as good as Neufer, but.....Image

Teeja

Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by Teeja » Sun Apr 18, 2010 11:52 am

"As pictured above, many Earths would easily fit under the expanding ribbon"

As pictured above *where* ???

Astronut

Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by Astronut » Sun Apr 18, 2010 11:57 am

Yup! No matter how you brush it, comb it or wet it, there's always that one little tuft of hair that sticks up out of place.

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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by bystander » Sun Apr 18, 2010 2:12 pm

Teeja wrote:As pictured above *where* ???
here

MrZorg

Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by MrZorg » Sun Apr 18, 2010 5:42 pm

that is the worst image I have ever seen, the color level is so crappy you really can't see the full effect.

data

Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by data » Mon Apr 19, 2010 2:45 am

the april 18th 2010 apod presents a picture of the earth's star. identify the black spot in the upper left quadrant.

workgazer

Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by workgazer » Mon Apr 19, 2010 12:34 pm

little black spot, well spotted, perhaps this is the start of a sun spot?

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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by bystander » Mon Apr 19, 2010 2:26 pm

There's a little black spot on the sun today / It's the same old thing as yesterday -- Sting

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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by alphachapmtl » Mon Apr 19, 2010 4:58 pm

I remember seeing a very similar image from Skylam in the 1970s.
Looking for it, I found it was taken on 1973 dec 19.
You can see it there:
http://www.physics.unlv.edu/~jeffery/as ... n_prom.gif
http://www.nrl.navy.mil/content_images/sun.jpg

albert

Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by albert » Mon Apr 19, 2010 9:37 pm

That's because Planet X is influencing all stars and planets in this system as it's 4 times the mass of earth and to the left of the sun in the morning

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Re: APOD: Large Eruptive Prominence Imaged by... (2010 Apr 1

Post by wonderboy » Fri Apr 23, 2010 11:54 am

bystander wrote:
Teeja wrote:As pictured above *where* ???
here


mwuhahah, well done bystander.

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