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The movement is peak McGregor: Bodies curving and winding, morphing between defined shapes and liquid deliquescence; legs extending with gasp-inducing flexibility.

However, according to Edgard Rivera-Valentin, it would be difficult for salts near the surface to absorb water vapor from Mars’s atmosphere to make the brine in the first place—a process known as deliquescence.

Rivera-Valentin, a planetary scientist at the Texas-based Lunar and Planetary Institute who was not part of the study, says deliquescence is challenging even at the planet’s poles.

They’ve been prized for the very qualities that make some people shudder: their crunch, chewiness and final deliquescence on the tongue.

“Picasso 1932” is as much her show as his, and the young Frenchwoman, lithe, athletic, untroubled, appears again and again in uncanny states of bodily deliquescence.