... Flying Over the Columbia Hills of Mars . ... Combining terrain data from the orbiting Mars Global Surveyor spacecraft (now dormant) with information about the robotic Spirit rover currently rolling across Mars has resulted in a digital movie that shows what a flight over the Columbia Hills might look like. ... The M81 Galaxy Group Through the Integrated Flux Nebula . ... Most of the time, the apparent motion of Mars in Earth's sky is in one direction, slow but steady in front of the far distant...