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Scientists think dark streaks on Mars might be from dust, not water.

Experts say dust, not water, makes streaks on Mars. Wind or marsquakes move the dust, which flows like liquid when disturbed.
Water isn't completely ruled out on Mars. It's hard to find due to cold and thin air, but very salty water might exist briefly.

Scientists think dark streaks on Mars might be from dust, not water.

Experts say dust, not water, makes streaks on Mars. Wind or marsquakes move the dust, which flows like liquid when disturbed.
Water isn't completely ruled out on Mars. It's hard to find due to cold and thin air, but very salty water might exist briefly.