emitted by eleven times ionized iron at temperatures
over 2 million degrees Farenheit
was used to record the above picture of the
Sun on September 22, the date of the
The image was made by
the EIT camera
the SOHO spacecraft
, a space observatory which can continuously
observe the Sun
Eleven times ionized iron is
with eleven of its electrons stripped away.
Here the electrons are stripped by the
frantic collisions with other atoms and electrons
which occur at the extreme temperatures in
Since electrons are negatively charged, the
resulting ionized iron atom is highly positively charged.
Astronomer's "shorthand" for eleven times ionized iron is written
"Fe XII", the chemical
followed by a Roman numeral 12 (Fe I is neutral iron).