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Mercury |
Fast Facts:
- first planet
from the Sun
- average
distance from the Sun is 58 million km
- average
temperature during the day is 410 degrees Celsius
- average
temperature during the night is -170 degrees Celsius
- diameter at
equator 4878km
- no moons
- length of day
is 176 Earth days
- length of year
is 88 Earth days
- no atmosphere
- nearest
distance to Earth is 45 million km
Old basin is 190 km in
diameter. It is partly degraded and cratered by later events.
Image Credit:
NASA/JPL/Northwestern University
A scarp, or cliff,
more than 300 kilometers long extends diagonally from upper right
to lower left. Numerous similar structures have been found on the
planet.
Image Credit: NASA/JPL/Northwestern University
At lower left, a portion of a 61 kilometer crater shows a flow front
extending across the crater floor and filling more than half of the
crater. The smaller, fresh crater at center is about 25 kilometers
in diameter.
Image Credit: NASA/JPL/Northwestern University
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