LCROSS - Revision history

Farred: update

2013-04-18T20:14:23Z

update

67.63.172.166: /* Project Team[http://lcross.arc.nasa.gov/index.htm LCROSS - National Aeronautics and Space Administration][http://spacescience.arc.nasa.gov/LCROSS/ The LCRO

2008-08-12T23:22:39Z

/* Project Team<ref name="lcross">[http://lcross.arc.nasa.gov/index.htm LCROSS - National Aeronautics and Space Administration]</ref><ref name="ssad">[http://spacescience.arc.nasa.gov/LCROSS/ The LCRO

67.63.172.166: /* Project Team */

2008-08-12T23:21:19Z

Project Team

67.63.172.166: /* Project Team */

2008-08-12T23:17:05Z

Project Team

67.63.172.166: /* External Links */

2008-08-12T23:10:56Z

External Links

67.63.172.166 at 23:07, 12 August 2008

2008-08-12T23:07:29Z

67.63.172.166 at 23:04, 12 August 2008

2008-08-12T23:04:01Z

67.63.172.166 at 23:03, 12 August 2008

2008-08-12T23:03:11Z

67.63.172.166: verified some information

2008-08-12T18:51:05Z

verified some information

67.63.172.166 at 18:46, 12 August 2008

2008-08-12T18:46:49Z

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 [[Image:LCROSSmain_lunarorbiter3.jpg|right|thumb|300px|LCROSS ready to separate from its Centaur upper stage. Photo credit: NASA]]
@@ Line 9: / Line 7: @@
 LCROSS Lunar Crater Observation and Sensing Satellite
-The Lunar CRater Observation and Sensing Satellite (LCROSS), was purpose built to search for [[water|H<sub>2</sub>O]] on the [[Moon]] and is to be launched as a secondary payload on [[Lunar Reconnaissance Orbiter]]. The smaller secondary payload spacecraft will travel with the Lunar Reconnaissance Orbiter (LRO) satellite to the moon on the same Atlas-Centaur EELV rocket to be launched from Cape Canaveral Air Force Station, Florida.  After launch, the 'secondary payload,' LCROSS spacecraft will arrive in the lunar vicinity independent of the LRO satellite. On the way to the moon, the spacecraft's two main parts, the Shepherding Spacecraft (S-S/C) and the [[Centaur]] Upper Stage will remain coupled.
+The Lunar CRater Observation and Sensing Satellite (LCROSS), was purpose built to search for [[water|H<sub>2</sub>O]] on the [[Moon]] and was launched as a secondary payload on [[Lunar Reconnaissance Orbiter]]. The smaller secondary payload spacecraft traveled with the Lunar Reconnaissance Orbiter (LRO) satellite to the moon on the same Atlas-Centaur EELV rocket launched from Cape Canaveral Air Force Station, Florida, on June 18, 2009.  After launch, the 'secondary payload,' LCROSS spacecraft arrived in the lunar vicinity independent of the LRO satellite. On the way to the moon, the spacecraft's two main parts, the Shepherding Spacecraft (S-S/C) and the [[Centaur]] Upper Stage remained coupled.
 [[Image:LCROSSmain_lunarorbiter2.jpg|left|thumb|300px|LCROSS Centaur upper stage heading towards impact site. Photo credit: NASA]]
 Most of the Moon lacks water and is extremely low in other volatiles. With a very tenuous argon astmosphere and 300° temperature swings between night and day, most of the Moon's surface is a hostile place for water. However there are a few cold, dark places where water molecules could collect and remain frozen. At the lunar poles, the sun is always low on the horizon, so some crater ridges cast shadows that keep parts of the crater floors in perpetual darkness. Temperatures in the shadows hover around 40° above absolute zero (-233° Celsius), cold enough for water ice to survive indefinitely.
-"The explosion itself will likely be obscured by the walls of the target crater. Instead, what astronomers will look for is the impact plume. An expanding cone of ejecta will rise more than 6 kilometers above the lunar surface and spread outward for about 40 km in every direction. The debris is expected to shine like a 6th to 8th magnitude star—invisible to the human eye but an easy target for backyard telescopes."<ref name="update08"/>
+NASA Science News described what the event would look like in this way: "The explosion itself will probably be hidden by the walls of the target crater. Instead, what astronomers will look for is the impact plume. An expanding cone of ejecta will rise more than 6 kilometers above the lunar surface and spread outward for about 40 km in every direction. Glistening in the sunlight the debris is expected to shine like a 6th to 8th magnitude star—invisible to the human eye but an easy target for backyard telescopes."<ref name="update08"/>
 [[Image:LunarImpact.jpg|right|thumb|450px|The life cycle of a lunar impact and associated time and special scales. The LCROSS measurement methods are “layered” in response to the rapidly evolving impact environment. Photo Credit: NASA]]
-The LCROSS mission will help determine if there is water hidden in the permanently dark craters of one of the moon's poles. "If LCROSS's booster stage hits a patch of lunar regolith that contains at least 0.5 percent water ice, water should be detectable in the plume of ejecta," per Anthony Colaprete<ref name="update08">[http://science.nasa.gov/headlines/y2008/11aug_lcross.htm?list994099  A Flash of Insight: LCROSS Mission Update] - Edited by Dr. Tony Phillips, [http://science.nasa.gov/ Science@NASA]</ref>.
+The LCROSS mission showed there is water hidden in some permanently dark craters on the moon.   Anthony Colaprete said: "If LCROSS's booster stage hits a patch of lunar regolith that contains at least 0.5 percent water ice, water should be detectable in the plume of ejecta,"<ref name="update08">[http://science.nasa.gov/headlines/y2008/11aug_lcross.htm?list994099  A Flash of Insight: LCROSS Mission Update] - Edited by Dr. Tony Phillips, [http://science.nasa.gov/ Science@NASA]</ref> and so it ocurred.
-−
 ==Science Payload==
-The LCROSS science payload consists of two near-infrared spectrometers, a visible light spectrometer, two mid-infrared cameras, two near-infrared cameras, a visible camera and a visible radiometer.
+The LCROSS science payload consisted of two near-infrared spectrometers, a visible light spectrometer, two mid-infrared cameras, two near-infrared cameras, a visible camera and a visible radiometer.
 {|

@@ Line 59: / Line 59: @@
 [[Image:LCROSSmain_lunarorbiter1.jpg|left|thumb|300px|LCROSS plume developing with S-SC looking outward and down. Photo credit: NASA]]
-==Project Team<ref name="lcross">[http://lcross.arc.nasa.gov/index.htm LCROSS - National Aeronautics and Space Administration]</ref><ref name="ssad">[http://spacescience.arc.nasa.gov/LCROSS/ The LCROSS Mission - Space Science and Astrobiology Division - NASA AMES]</ref>==
+==Project Team<ref name="lcross">[http://lcross.arc.nasa.gov/bios.htm LCROSS - Biographies of the LCROSS Mission            Team]</ref><ref name="ssad">[http://spacescience.arc.nasa.gov/LCROSS/ The LCROSS Mission - Space Science and Astrobiology Division - NASA AMES]</ref>==
 *Sponsor: [[NASA Ames Research Center]]
 *Principal Investigator: [[Dr. Anthony Colaprete]]

@@ Line 59: / Line 59: @@
 [[Image:LCROSSmain_lunarorbiter1.jpg|left|thumb|300px|LCROSS plume developing with S-SC looking outward and down. Photo credit: NASA]]
-==Project Team==
+==Project Team<ref name="lcross">[http://lcross.arc.nasa.gov/index.htm LCROSS - National Aeronautics and Space Administration]</ref><ref name="ssad">[http://spacescience.arc.nasa.gov/LCROSS/ The LCROSS Mission - Space Science and Astrobiology Division - NASA AMES]</ref>==
 *Sponsor: [[NASA Ames Research Center]]
 *Principal Investigator: [[Dr. Anthony Colaprete]]

@@ Line 62: / Line 62: @@
 *Sponsor: [[NASA Ames Research Center]]
 *Principal Investigator: [[Dr. Anthony Colaprete]]
-*[[Kim Ennico]]
+*Project Manager: [[Daniel Andrews]]
 *[[Diane Wooden]]
 *[[Tony Ricco]]

@@ Line 70: / Line 70: @@
 ==External Links==
+*[http://spacescience.arc.nasa.gov/LCROSS/ The LCROSS Mission - Space Science and Astrobiology Division - NASA AMES]
-[http://spacescience.arc.nasa.gov/LCROSS/ LCROSS website]
+*[http://lcross.arc.nasa.gov/index.htm LCROSS - National Aeronautics and Space Administration]
 ==References==

@@ Line 15: / Line 15: @@
 [[Image:LCROSSmain_lunarorbiter2.jpg|left|thumb|300px|LCROSS Centaur upper stage heading towards impact site. Photo credit: NASA]]
-As the spacecraft approaches the moon's south pole, the 2000kg Centaur will separate and then will impact a crater in a polar region of the moon 7 hours later at 9,000 km/hr, producing an explosion 200 times more powerful than that of [[Lunar Prospector]] and equivalent to about 2,000 pounds of TNT (6.5 billion joules). The blast will jettison a plume of material out of the crater where astronomers can search the debris for signs of lunar water. The plume from the Centaur crash will develop as the Shepherding Spacecraft heads in towards the moon. The S-S/C will fly through the plume, and instruments on the spacecraft will analyze the cloud to look for signs of water and other compounds. Additional space and earth-based instruments also will study the huge plume, which scientists expect to be 1000 metric tons.  The booster impact is set to occur sometime between May and August 2009, depending on launch dates.  The other half of the LCROSS mission, weighing 700kg (the Shepherding Spacecraft), will observe the impact and then itself crash into the Moon 10 minutes later.
+As the spacecraft approaches the moon's south pole, the 2000kg Centaur will separate and then will impact a crater in a polar region of the moon 7 hours later at 9,000 km/hr, producing an explosion 200 times more powerful than that of [[Lunar Prospector]] and equivalent to about 2,000 pounds of TNT (6.5 billion joules). The blast will jettison a plume of material out of the crater where astronomers can search the debris for signs of lunar water. The plume from the Centaur crash will develop as the Shepherding Spacecraft heads in towards the moon. The S-S/C will fly through the plume, and instruments on the spacecraft will analyze the cloud to look for signs of water and other compounds. Additional space and earth-based instruments also will study the huge plume, which scientists expect to be 1000 metric tons.  The booster impact is set to occur sometime between May and August 2009, depending on launch dates.  The other half of the LCROSS mission, weighing 700kg (the Shepherding Spacecraft), will observe the impact and then itself crash into the Moon 4 minutes later.
 Most of the Moon lacks water and is extremely low in other volatiles. With a very tenuous argon astmosphere and 300° temperature swings between night and day, most of the Moon's surface is a hostile place for water. However there are a few cold, dark places where water molecules could collect and remain frozen. At the lunar poles, the sun is always low on the horizon, so some crater ridges cast shadows that keep parts of the crater floors in perpetual darkness. Temperatures in the shadows hover around 40° above absolute zero (-233° Celsius), cold enough for water ice to survive indefinitely.

@@ Line 21: / Line 21: @@
 '''{Possible errors in this section shown in bold.  Information came from an early press release and numbers should be updated.}'''
-'''The explosion itself will probably be hidden by the walls of the target crater.''' Instead, what astronomers will look for is the impact plume. An expanding cone of ejecta will rise more nearly 50 kilometers above the lunar surface and '''spread outward for about 40 km in every direction. The debris is expected to shine like a 6th to 8th magnitude star—invisible to the human eye but an easy target for backyard telescopes.'''
+The explosion itself will likely be obscured by the walls of the target crater. Instead, what astronomers will look for is the impact plume. An expanding cone of ejecta will rise more nearly 50 kilometers above the lunar surface and '''spread outward for about 40 km in every direction. The debris is expected to shine like a 6th to 8th magnitude star—invisible to the human eye but an easy target for backyard telescopes.'''
 '''{end section}'''