Word: moons
(lookup in dictionary)
(lookup stats)
Dates: during 2000-2009
Sort By: most recent first
(reverse)
...getting hard to find many Americans who remember where they were the last time men set foot on the moon. Not only had most of us quit paying attention to lunar landings by then, but 48% of us hadn't even been born by December 1972, when the last moon walkers left the lunar surface and headed for home...
...bound for deep space again. In a rare double hit of good-news headlines last week, NASA announced first that it has firmed up its plans for America's return to the moon and then, two days later, that it had discovered signs that water had flowed on the surface of Mars within the past seven years. Where there is water, of course, there could be life...
...shuttle and long-extinct Saturn boosters. The lunar orbital vehicles will be souped-up Apollo command modules and the landers will be similarly updated lunar excursion modules - the lovable, buglike LEMs. Astronauts on Apollos 15, 16 and 17 already showed that lunar rovers could be safely driven across the moon's surface, providing another proven technology that would be essential to a lunar community...
...Even more promising - if far more speculative - is the mission profile for the crews. All of the Apollos landed near the lunar equator, a comparatively easy target for first-time visitors who don't plan to stay too long. A moon base would have to be built in the harder-to-target poles. The perpetual sunshine in most of the extreme north and south means plenty of light for energy-producing solar panels; the perpetual darkness in the shadowed polar regions means a steady supply of water ice, which can be harvested for consumption and fuel manufacture. Currently...
...There are other, trickier challenges that would have to be overcome. Part of the justification for a lunar base has always been that the moon is rich in helium-3, an isotope of common helium that could serve as fuel in eventual fusion reactors. Astronauts could, in theory, mine the stuff and ship it back to Earth. That's fine, but first we have to, well, invent the reactor. What's more, as the beleaguered crews aboard the International Space Station have discovered, sometimes just maintaining your ship can take all your time and the mission itself - scientific research, mining...