A more optimistic argument for the presence of running water on Mars came in a presentation at the American Geophysical Union, also in December.
A more optimistic argument for the presence of running water on Mars came in a presentation at the American Geophysical Union, also in December.
同在12月，对于火星上是否有液态水，美国地球物理联合会上则出现较乐观的看法。