คำถาม
NASA scientists announced that the Curiosity rover found direct evidence for an ancient stream-bed in Gale Crater, suggesting an ancient "vigorous flow" of water on Mars. โดยเฉพาะอย่างยิ่ง, analysis of the now dry streambed indicated that the water ran at 3.3 กม./ชม (0.92 นางสาว), ...