Image: Coronal loops in an active region of the sun

Feb 19, 2014
Credit: NASA/Solar Dynamics Observatory

An active region of the sun just rotating into the view of NASA's Solar Dynamics Observatory gives a profile view of coronal loops over about a two-day period, from Feb. 8-10, 2014.

Coronal loops are found around sunspots and in active regions.

These structures are associated with the closed magnetic field lines that connect magnetic regions on the solar surface.

Many last for days or weeks, but most change quite rapidly.

This image was taken in extreme ultraviolet light.

Explore further: NASA's SDO sees giant January sunspots

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User comments : 3

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cantdrive85
1 / 5 (1) Feb 23, 2014
These structures are associated with the closed magnetic field lines that connect magnetic regions on the solar surface.

Are they insinuating there are "open" field lines? Oh right, they are! Open field lines flapping in the interstellar breeze yearning there be an interstellar twin of him to latch onto...
Captain Stumpy
not rated yet Feb 23, 2014
@cantdrive
are you illiterate?
you QUOTED
These structures are associated with the closed magnetic field lines that connect magnetic regions on the solar surface

from the article...
then you say:
Are they insinuating there are "open" field lines? Oh right, they are! Open field lines flapping in the interstellar breeze yearning there be an interstellar twin of him to latch onto...


we already knew you were a pseudo-science acolyte
now
Cantdrive=TROLL

Tim Thompson
5 / 5 (2) Feb 25, 2014
Are they insinuating there are "open" field lines? Oh right, they are! Open field lines flapping in the interstellar breeze yearning there be an interstellar twin of him to latch onto...

No, they are not. You simply don't understand enough physics to know what they are saying. In the jargon of solar physics, an "open" field line is one that does not connect back to the sun. It connects instead to a planetary magnetic field, or to the interstellar magnetic field. Nobody suggests that there are field lines "flapping in the breeze", that's just something you are making up.

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