MESSENGER confirms presence of water ice on Mercury
Posted: Fri, Nov 30, 2012, 7:38 AM ET (1238 GMT)
Data from several instruments on a NASA spacecraft have allowed scientists to confirm the presence of water ice in craters near the poles of Mercury. In papers published in the journal Science this week, scientists said that data from the spacecraft's neutron spectrometer confirmed the presence of hydrogen-rich deposits, likely water ice, in permanently-shadowed craters near the planet's poles. Those areas correspond with radar-bright features in those craters, first detected by ground-based radar observations two decades ago. Near-infrared imagery also detected traces of organic compounds, likely left behind by the comet and asteroid impacts that deposited the ice, covering the ice. Scientists estimate the shadowed regions of craters, which remain cold enough to keep ice because they're always out of view of the Sun, could harbor between 100 billion and one trillion tons of ice.
Data from several instruments on a NASA spacecraft have allowed scientists to confirm the presence of water ice in craters near the poles of Mercury. In papers published in the journal Science this week, scientists said that data from the spacecraft's neutron spectrometer confirmed the presence of hydrogen-rich deposits, likely water ice, in permanently-shadowed craters near the planet's poles. Those areas correspond with radar-bright features in those craters, first detected by ground-based radar observations two decades ago. Near-infrared imagery also detected traces of organic compounds, likely left behind by the comet and asteroid impacts that deposited the ice, covering the ice. Scientists estimate the shadowed regions of craters, which remain cold enough to keep ice because they're always out of view of the Sun, could harbor between 100 billion and one trillion tons of ice.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
|
|
news links
|
|
Wednesday, June 24
Rakuten to Launch Japan’s 1st Domestic Smartphone Satellite Communication Network, Aiming to Compete with Starlink
Yomiuri Shimbun — 6:28 am ET (1028 GMT) Falcon 9 Launch of Starlink Satellites from Vandenberg SFB Scheduled for Wednesday Night
KEYT-TV Santa Barbara, CA — 6:28 am ET (1028 GMT) SpaceX launch planned for Wednesday from Vandenberg Space Force Base
KSBY-TV San Luis Obispo, CA — 6:26 am ET (1026 GMT) Space Force must prepare for all-out warfare, think tank says
Defense One — 6:26 am ET (1026 GMT) War games in orbit: Rocket Lab shows US Space Force it's good to go
Radio New Zealand — 6:25 am ET (1025 GMT) |
