What Was That Ring Around the Moon?
Dec/09BC
Source: Yahoo! Buzz
Yahoo! - Many folks who looked up at the sky last night were greeted with a very bizarre sight: a luminous ring surrounding the moon. Were aliens coming? Was the end of the world at hand? Fortunately, no.
Though it looked ominous, the shiny ring around the moon last night was actually a rather common weather phenomenon. According to various weather-related blogs across the Buzz, this ring around the moon occurs when thin cirrus clouds, which contain ice crystals, refract the moonlight. A blog from the Goddard Space Flight Center explains that “the shape of the ice crystals results in a focusing of the light into a ring. Since the ice crystals typically have the same shape, namely a hexagonal shape, the Moon ring is always the same size.”
Water Found on the Moon
Nov/09BC
Source: Space.com
Since man first touched the moon and brought pieces of it back to Earth, scientists have thought that the lunar surface was bone dry. But new observations from three different spacecraft have put this notion to rest with what has been called “unambiguous evidence” of water across the surface of the moon.
The new findings, detailed in the Sept. 25 issue of the journal Science, come in the wake of further evidence of lunar polar water ice by NASA’s Lunar Reconnaissance Orbiter and just weeks before the planned lunar impact of NASA’s LCROSS satellite, which will hit one of the permanently shadowed craters at the moon’s south pole in hope of churning up evidence of water ice deposits in the debris field.
The moon remains drier than any desert on Earth, but the water is said to exist on the moon in very small quantities. One ton of the top layer of the lunar surface would hold about 32 ounces of water, researchers said.
“If the water molecules are as mobile as we think they are — even a fraction of them — they provide a mechanism for getting water to those permanently shadowed craters,” said planetary geologist Carle Pieters of Brown University in Rhode Island, who led one of the three studies in Science on the lunar find, in a statement. “This opens a whole new avenue [of lunar research], but we have to understand the physics of it to utilize it.”
Finding water on the moon would be a boon to possible future lunar bases, acting as a potential source of drinking water and fuel.