NASA Cancels Mars Sample Retrieval Due to Cost 조선일보An abandoned rock sample could prove life once existed on Mars. But will it ever reach Earth? CNNNASA’s Perseverance rover studied more than 185 rock targets along the inner rim of Jezero Crater and found they met water at least three times, the last as hot fluid that left fluorite veins ECOticias.com – El Periódico Verde
