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Astronomy Picture of the Day
Venus' Once Molten Surface
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#112699
by
[z]Barbara Harris
@
02.08.2010 00:00
- nach oben -
Venus' Once Molten Surface
Explanation: If you could look across Venus with
radar
eyes, what might you see? This computer reconstruction of the surface of
Venus
was created from data from the
Magellan
spacecraft.
Magellan
orbited
Venus
and used
radar
to map our
neighboring
planet
's surface between 1990 and 1994.
Magellan
found many
interesting surface
features, including the
large circular domes
, typically 25-kilometers across, that are
depicted above
.
Volcanism
is thought to have created the
domes
, although the precise mechanism remains unknown.
Venus
' surface is so hot and hostile that no
surface probe
has lasted more than a few minutes. Students & Teachers:
Free Video Astro 101 Lectures Online
Credit & Copyright