Martian Astronaut and Alien Exchange

A girl in a fully closed modern white spacesuit with a tinted visor stands on the surface of Mars. Red-orange rocky desert, dusty pinkish sky. Opposite her stands a tall humanoid [alien with pale pink semi-transparent skin, an elongated skull, large black almond-shaped eyes, and a graceful slender body] in a tight-fitting bio-organic suit of silvery-pearl color. Realistic detailed anatomy. The girl is handing him an [iPhone in a pink case]. The alien is handing her a {argument name="alien item" default="crystal vi…