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Could the Tumbleweed Rover Dominate Mars?

We've explored Mars with satellites, landers and rovers, could the next robotic exploration vehicle be spherical in shape and inspired by the humble wind-blown tumbleweed?

March 4, 2010
8:22 PM EST
Tumbleweed probes exploring the Dao Vallis region of Mars. The inhospitable terrain is un-passable using conventional rovers, whereas a wind-blown Tumbleweed could traverse the gullies and debris to look for water and life (NASA LaRC/Case Western University/NASA Planetary Data System)
A comparison of dust cover on NASA's Mars Expedition Rover Spirit's solar panels (NASA/JPL).
The inflatable Mars Tumbleweed concept during tests in Antarctica in 2004 (Alberto Behar/NASA JPL)
The inflatable Tumbleweed concept being propelled by the Mars wind (NASA LaRC/Case Western University/NASA Planetary Data System)