Credi-Bull - a story that might be fact, and might be fiction. When playing, please avoid definitive answers like "I know this is true, I saw it on the news last night". Instead, couch your vote as a "guess" - this will help ensure that everyone gets an unbiased chance to play!
A team of interns with NASA's Lunar and Planetary Science Academy is investigating a phenomenon called 'roving rocks' at Death Valley in California.
These stones are a sedimentary rock called dolomite, and range in size from less than one pound to a maximum of seven hundred pounds. The rocks have a very unusual property - they move thanks to a mysterious force.
The rocks aren't rolling downhill - most specimens actually travel uphill, some moving in pairs several hundred yards and negotiating around obstacles.
The NASA research team has a number of theories to explain the roving rocks - everything from high winds to moist, low-friction clay, to ice and snow, but nothing has been definitively proven.
So - the mysterious roving rocks of Death Valley - credible, or just bull? Vote in the comments.
A team of interns with NASA's Lunar and Planetary Science Academy is investigating a phenomenon called 'roving rocks' at Death Valley in California.
These stones are a sedimentary rock called dolomite, and range in size from less than one pound to a maximum of seven hundred pounds. The rocks have a very unusual property - they move thanks to a mysterious force.
The rocks aren't rolling downhill - most specimens actually travel uphill, some moving in pairs several hundred yards and negotiating around obstacles.
The NASA research team has a number of theories to explain the roving rocks - everything from high winds to moist, low-friction clay, to ice and snow, but nothing has been definitively proven.
So - the mysterious roving rocks of Death Valley - credible, or just bull? Vote in the comments.
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