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Astronomy Picture of the Day
Filaments Across the Sun
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#58794
by
[z]Barbara Harris
@
07.12.2004 00:00
- nach oben -
Filaments Across the Sun
Explanation:
Two unusually long filaments crossed part of the Sun last week.
The
filaments
are actually relatively cool and dark
prominences
of solar
plasma
held up by the Sun's
magnetic field
but seen against the
face of the Sun
.
Filaments typically last a few weeks before falling back.
Pictured above
, the
two filaments are visible on the
Sun
's right side.
It would take twenty Earths, set end-to-end, to match the
length of one of the
filaments
.
Also visible are bright hot regions called
plages
and a carpet of hundreds of
granules
that provide the Sun's texture.
The
above image
was taken early last week through a small telescope in a
very
specific color
of light emitted primarily by
hydrogen
.
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