The Gobi Desert is unequivocally in Asia. It spans Mongolia and China (Inner Mongolia, Xinjiang, Gansu), covering ~1.3M km² — Asia's largest desert, world's fifth-largest overall.
Not in Africa. (Sahara, Namib, Kalahari are African)
Not in South America. (Atacama, Patagonian, Monte are South American)
Rain shadow from Himalayas (blocking Indian monsoon) + distance from moisture sources + continental interior position = extreme aridity (50-200 mm), temperature extremes (-40°C to +45°C).
Dinosaur fossil treasure trove (Flaming Cliffs). Silk Road northern route. Cashmere goat herding. Rare earth minerals. Climate change sentinel — expanding ~3,600 km²/year (desertification).
Gobi = Asia. Always has been, always will be.