What substance allows briny water to remain liquid for short periods in the cold Martian environment causing RSLs?

Answer

Perchlorates

Recurring Slope Lineae are hypothesized to be formed by water saturated with perchlorates, which are salts that function as an antifreeze, lowering the water's freezing point sufficiently to allow momentary liquidity.

What substance allows briny water to remain liquid for short periods in the cold Martian environment causing RSLs?

#Videos

Just in: NASA Has Found Oceans of Liquid Water on Mars...For Real

Marsastronomywaterplanetsevidence