A international team of scientists led by the Centro of Astrobiología (CAB), CSIC-INTA, has achieved the first space-based image of S₂H, a key disulfide bond molecule in terrestrial biochemistry, towards the Horsehead Nebula. This finding suggests that complex molecules, possibly related to the origin of life, could form in cold interstellar clouds long before planets. SH⁺ and CO⁺ have also been detected for the first time in this nebula, revealing the influence of UV radiation on the chemistry of the cosmos
