Sentences with phrase «lunar poles»

The phrase "lunar poles" refers to the two points on the Moon's surface that are farthest north and farthest south. They are frequently mentioned because they have unique characteristics, such as the presence of permanently shadowed areas and a possibility of containing water ice. Full definition
The ice they carried would have vaporized from the impact, settling eventually in permanently shadowed craters near the north and south lunar poles, where the extreme cold (below — 400 degrees Fahrenheit, according to recent observations) would have preserved it almost indefinitely.
Since the 1960's scientists thought that only in permanently shadowed areas in craters near the lunar poles was it cold enough to accumulate this volatile material, but recent observations by a number of spacecraft, including LRO, suggest that hydrogen on the moon is more widespread.
Climate is the main reason NASA announced last December that it would build its outpost near one of the lunar poles.
By the time that happens, perhaps around 2018, planners hope to have resolved some key unknowns: whether there are ice deposits at one of the lunar poles, whether a space suit can be made that can survive multiple journeys across the dust - ridden landscape, and whether the human body can survive dust, lengthy stays in reduced gravity, and prolonged exposure to cosmic radiation.
But scientists could piggyback on those journeys to study topics such as the plasma environment around the lunar poles, or to begin establishing a network of geophysical landers that would listen for moonquakes.
Although the recent Clementine mission observed the lunar poles, like Mariner 10 it could not detect ice in dark regions.
For example, he pointed to sun - shy craters at the lunar poles, where near - constant darkness has trapped and preserved water ice ripe for conversion into oxygen, water and rocket propellant.
Although the new papers provide some answers about the lunar poles, the impact, so to speak, of LCROSS is still being felt.
Powerful solar storms can charge up the soil in frigid, permanently shadowed regions near the lunar poles, and may possibly produce «sparks» that could vaporize and melt the soil, perhaps as much as meteoroid impacts, according to NASA - funded research.
The study also puts a new twist on the origin of water ice detected in craters at the lunar poles by several recent NASA missions.
Since they knew that Chandrayaan - 1 was in polar orbit around the moon, and that the spacecraft would always cross above the lunar poles on each orbit, they focused their attention to the moon's north pole on July 2, 2016, and were able to locate the missing orbiter.
That fact may not only upset the prevailing theory about how the moon formed, but it also offers a credible alternative for why water ice is located at the lunar poles.
a b c d e f g h i j k l m n o p q r s t u v w x y z