火星南极冰盖之下，是否存在隐秘湖泊？这一科学谜题再次引发了广泛讨论。欧洲火星快车号航天器在多年前曾探测到疑似液态水湖的信号，但最新的计算机模拟结果却对这一发现提出了挑战。

The robot rover that Europe and Russia will send to Mars in 2020 will be targeted at a near-equatorial site on the Red Planet known as Oxia Planum. The area was recommended by an expert panel ...