Barnacle Bill (Martian rock)
Barnacle Bill is a 40-centimetre (16 in) rock on Mars in Ares Vallis. It was the first rock on Mars analyzed by the Sojourner rover using its Alpha Proton X-ray Spectrometer. The encounter occurred during Sol 3 of the Mars Pathfinder mission on the surface of Mars and took ten hours to complete.
"Barnacle Bill" rock - close-up
 Sojourner rover next to the "Barnacle Bill" rock | |
| Feature type | Rock |
|---|---|
| Coordinates | 19.33°N 33.55°W |
Early analysis of data sent from Sojourner led scientists to speculate that the rock was andesite.
The name was inspired in mission scientists by barnacle-like structures on the rock that appeared in transmitted photos.
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| Adirondack (Spirit) |
Barnacle Bill (Sojourner) |
Bathurst Inlet (Curiosity) |
Big Joe (Viking) |
Block Island (Opportunity) M |
Bounce (Opportunity) |
Coronation (Curiosity) |
El Capitan (Opportunity) |
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| Esperance (Opportunity) |
Goulburn (Curiosity) |
Heat Shield (Opportunity) M |
Home Plate (Spirit) |
Hottah (Curiosity) |
Jake Matijevic (Curiosity) |
Last Chance (Opportunity) |
Link (Curiosity) |
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| Mackinac Island (Opportunity) M |
Mimi (Spirit) |
Oileán Ruaidh (Opportunity) M |
Pot of Gold (Spirit) |
Rocknest 3 (Curiosity) |
Shelter Island (Opportunity) M |
Tintina (Curiosity) |
Yogi (Sojourner) |
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