The good news: Astronomers know they can combine new cutting-edge instruments to track small, distant asteroids years in advance. Teams including NASA's Center for Near-Earth Object Studies rely on those calculations to monitor space rocks and comets that could someday pose a real threat to Earth.
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美國和以色列現在可能更容易削弱伊朗的戰鬥能力,但要摧毀其所有武器庫存仍然十分困難。
受伊朗局势持续升级影响,3月2日国内期货市场反应剧烈。截至当日收盘,集运指数(欧线)、原油、高硫燃料油、低硫燃料油、甲醇、液化气、丙烯、聚丙烯、乙二醇、纯苯等12个品种涨停。此外,黄金、白银等品种也出现大涨。