Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903. - Wilson, Thomas G.; Simpson, Anna M.; Collier Cameron, Andrew; Cloutier, Ryan; Adibekyan, Vardan; John, Ancy Anna; Alibert, Yann; Stalport, Manu; Egger, Jo Ann; Bonfanti, Andrea; Billot, Nicolas; Guterman, Pascal; et al. (Science, 2026)