||Aurora as seen by Polar UVI
Instrument - Before|
The Ultraviolet Imager on NASA's Polar spacecraft captured this
the aurora as seen from space on September 24-25, 1998. Auroras
typically seen from the ground only at night, but they in fact
around the day and night side of Earth's north and south poles.
the auroral oval in ultraviolet light allowed researchers to
intense activity on the day side of Earth, where the plasma from
ionosphere was squeezed out into space.
CREDIT: NASA Marshall Space Flight Center