These movies are composites from two instruments aboard the SOHO
spacecraft.  The region outside the black circle is from UVCS
(either H I Lyman alpha intensity or O VI 1032 Angstrom intensity,
as indicated), and the inner image is from EIT.  Both sets of images
show light emitted in the Sun's hot corona.  From April to October
1996, the Sun's magnetic field exhibited a well-defined geometry,
with closed-field loops encircling the equator and open-field
regions emerging from the north and south polar coronal holes.
Because the Sun rotates approximately once every 27 days, we also
see the rotation of bright active regions, both on the surface and
reaching out into the extended corona.