Showing posts with label Ebb and Flow spacecraft. Show all posts
Showing posts with label Ebb and Flow spacecraft. Show all posts

Monday, December 17, 2012

The GRAIL spacecraft, Ebb and Flow, have ended their mission with crashes on the Moon


If you missed the action the JPL Ustream event has been archived at:
December 17, 2012

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Before touchdown, when the moon was in day light, LRO imaged the expected crash point and will image it again when the moon is lite.  The actual crashes occurred while the lunar ridge was in shadow. The little washing machine sized spacecraft were destroyed but the flash wouldn't be bright enough to have been imaged here on Earth. 
(Someone can prove me wrong but having passed over a ridge on the northern part of the moon wouldn't help)
- LRK -

Impact points to be named after Sally Ride.
-LRK -

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snip
By design, the final resting place was far away from the Apollo landing sites and other historical spots on the moon.
After the double impacts, mission chief scientist Maria Zuber of the Massachusetts Institute of Technology said the spot has been named after team member Sally Ride, the first American woman in space, who died earlier this year.
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NASA's GRAIL Lunar Impact Site Named for Sally Ride

NASA has named the site where twin agency spacecraft impacted the moon Monday in honor of the late astronaut Sally K. Ride, who was America's first ...

› Read More
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This now adds two more spacecraft on the moon and and their respective debris fields.
- LRK -

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These side-by-side, 3-D comparisons depict the unnamed lunar mountain targeted by the NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission for controlled impact of the Ebb and Flow spacecraft.
These side-by-side, 3-D comparisons depict the unnamed lunar mountain targeted by the NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission for controlled impact of the Ebb and Flow ...
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As an added bit of information about the previous Apollo liter topic I am copying an email I received from Hu Davis.
With permission.
- LRK -

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Larry,

Re trash on the Moon, I must confess.  

LM-5 did not get the benefit of the $10,000 (?) per pound  bounty to Grumman of the "Super Weight Improvement Program (SWIP)" to reduce inert mass.  An inducement that was afforded for LM-6 and subsequent.  Thus, Lunar Module 5, Eagle, was planned to fly in orbit about but not to land on the Moon, as it was considered to be overweight.  

My associate, Roger Hicks, and I did not like the idea of our managing the last one to not land, so we did our own inert mass reduction plan in one week - - about 18 months before its flight date - that included no bounty.  

We suggested to George Low that, before closing the hatch for ascent, Neil and Buzz toss overboard the unneeded EVA back packs, hoses, descent flight plans, etc.  Then, if George refused adding even a pound of inert mass for the18 months before July 16, 1969, we could move up the first landing from October to late July.  Something of a Sicilian offer.

He did and it did.  LM-5 landed on July 20, 1969, leaving behind the Descent stage, a turned-over American flag, several lunar experiments and all of the junk they had tossed overboard in order to (barely) make the mission.  We had about 20 seconds of propellants remaining at shutdown, even at the reduced thrust needed for hovering flight.  Buzz reminded me of this in public a number of times, but 20 seconds is a long time in rocket parlance.

During our first lunar orbit, we got what turned out to be a false report that there was a Russian spacecraft of an unknown type in lunar orbit with us.  Scary, but false!!  We were glad when Eagle landed and we found out there was not a pair of Russians racing us.

On my next Lunar Module 10, for Apollo 15, we also left behind the first lunar rover.  Thus, I must plead guilty to being a leading litter bug of the Apollo program.  I would do it again!  Two national monuments, not trash dumps!

To my recollection, this story was not a part of any of the TV shows or other popular records of Apollo.  Why, I do not know, unless SWIP was considered by the policy wonks at NASA Headquarters to have been an expensive embarrassment.

Hu

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You may have your own opinions as to the value of continued missions to our moon and how they should be conducted. Please feel free to drop me a line at my Gmail account. 

I am getting too old to 'Fly me to the Moon' but you or yours may want to go. (75 New Years Eve) What you find there may be tempered by what has already arrived. 
- LRK -

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moon landing is the arrival of a spacecraft on the surface of the Moon. This includes both manned and unmanned (robotic) missions. The first human-made object to reach the surface of the Moon was the Soviet Union's Luna 2 mission on 13 September 1959.[3]
The United StatesApollo 11 was the first manned mission to land on the Moon on 20 July 1969.[4] There have been six manned U.S. landings (between 1969 and 1972) and numerous unmanned landings, though no soft landings have occurred since 1976.


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Thanks for looking with me.
- LRK -
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WHAT THE MIND CAN CONCEIVE, AND BELIEVE, IT WILL ACHIEVE - LRK -

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Saturday, December 15, 2012

Question asked - Why not crash Ebb and Flow into the crater Harpalus north of the Sinus Iridium?

Question asked - Why not crash Ebb and Flow into the crater Harpalus north of the Sinus Iridium? 
#79 Harpalus #16 Sinus Iridum


The crater was used in the movie 'Destination Moon' and would have been an homage to George Pal and Chesley Bonestell.  

Maybe you didn't grow up in the 1950's but to a lot of us the paintings, images and stories caused us to look up at the Moon and wonder if we would ever go there in person.
- LRK -

http://blogs.airspacemag.com/moon/2012/06/chesley-bonestell-and-landscape-of-the-moon/

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Rocket Ship Galileo
snip
The 1950 movie Destination Moon was loosely based on Rocket Ship Galileo, and Heinlein was one of three co-authors of the script. The film's plot also resembles that of "The Man Who Sold the Moon", which Heinlein wrote in 1949 but did not publish until 1951.
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To be remembered.
- LRK -

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A Lunar Landscape
Chesley Bonestell
Oil on canvas, 12 x 3 m (40 x 10 ft.)
1957
snip
Just as 19th–century artists created huge paintings to help Americans envision the scenic wonders of the West, A Lunar Landscape helped viewers imagine what it would be like to stand on another world. And just as those painters had taken artistic license to enhance the western landscape’s grandeur, Bonestell presented a dramatically lit moonscape with sharp peaks, jagged canyons, and precipitous crater walls.
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went to the Ustream teleconference link that is listed for the next Monday briefing and found the  AGU presentation and the 12/13/12 telecon archived, which I watched.   At the AGU presentation they didn't say where the spacecraft would be de-orbited but it was mentioned at the 12/13/12 meeting.


Ustream links.
- LRK -

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about the last expected moments. 
- LRK -

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This graphic highlights locations on the moon NASA considers 'lunar heritage sites' and the path NASA's Gravity Recovery and Interior Laboratory spacecraft will take on their final flight.

Full image and caption

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NASA to Provide Commentary as Grail Moon Mission Ends

Last Flight for GRAIL's Twin SpacecraftThis still image and animation shows the final flight path for NASA's twin Gravity Recovery and Interior Laboratory (GRAIL) mission spacecraft, which will impact the moon on Dec. 17, 2012, around 2:28 p.m. PST. Image credit: NASA/JPL-Caltech/GSFC/ASU
› Full image and caption

December 14, 2012
PASADENA, Calif. - NASA will provide live commentary of the scheduled lunar surface impacts of its twin Gravity Recovery and Interior Laboratory (GRAIL) spacecraft beginning at 2 p.m. PST (5 p.m. EST) Monday, Dec. 17. The event will be broadcast on NASA Television and streamed on the agency's website.

The two probes will hit a mountain near the lunar north pole at approximately 2:28 p.m. PST Monday, bringing their successful prime and extended science missions to an end.

Commentary will originate from the control room at NASA's Jet Propulsion Laboratory in Pasadena, Calif. Coverage will last about 35 minutes and include live interviews with GRAIL team members. GRAIL's final resting place on the moon will be in shadow at the time of impact, so no video documentation of the impacts is expected.

Data from the GRAIL twins are allowing scientists to learn about the moon's internal structure and composition in unprecedented detail. The two probes are being sent purposely into the moon because they do not have enough altitude or fuel to continue science operations.

For NASA TV streaming video, schedule and downlink information, visit: http://www.nasa.gov/ntv . The coverage will also be streamed live on Ustream at: http://www.ustream.tv/nasajpl2 .

Join the conversation on Twitter by following the hashtag #GRAIL. To learn more about all the ways to connect and collaborate with NASA, visit: http://www.nasa.gov/connect . 
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Will be interesting to see how the GRAIL mission ends.
- LRK -

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For NASA TV streaming video, schedule and down link information, visit:
http://www.nasa.gov/ntv

The coverage will also be streamed live on Ustream at:
http://www.ustream.tv/nasajpl2

Join the conversation on Twitter by following the hashtag #GRAIL. To
learn more about all the ways to connect and collaborate with NASA,
visit:
http://www.nasa.gov/connect

For the mission's press kit and other information about GRAIL, visit:
http://www.nasa.gov/grail
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Stay excited and marvel at the night sky, light pollution permitting.
Thanks for looking with me.
- LRK -
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WHAT THE MIND CAN CONCEIVE, AND BELIEVE, IT WILL ACHIEVE - LRK -

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Friday, December 14, 2012

Update on GRAIL, Ebb and Flow termination and MoonKAM project.


I went to the Ustream teleconference link that is listed for the next Monday briefing and found the 12/13/12 conference archived and found it very informative.  

It explains why a low angle impact of a crater ridge has been selected and not a high angle impact into a dark crater.  Fuel used for obtaining the most science possible for a very low altitude orbit for gravity mapping.  They are also small washing machine size spacecraft and won't make a large crater.

LRO has imaged the expected crash site and will image the site when the moon is in day light. (crash will be on near side of moon but site will be at moon night on 12/17/12.) Hopefully LRO will be able to analyze some of the debris. 

http://www.ustream.tv/nasajpl2 - Minimal dead time before teleconference.
http://www.ustream.tv/recorded/27695120 - about 8 minutes of dead time before conference.
(They are included in the archived telecon.)
- LRK -

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For NASA TV streaming video, schedule and down link information, visit:
http://www.nasa.gov/ntv

The coverage will also be streamed live on Ustream at:
http://www.ustream.tv/nasajpl2

Join the conversation on Twitter by following the hashtag #GRAIL. To
learn more about all the ways to connect and collaborate with NASA,
visit:
http://www.nasa.gov/connect

For the mission's press kit and other information about GRAIL, visit:
http://www.nasa.gov/grail
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Ustream links.
- LRK -

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MoonKAM project - Should have said more about this earlier but the teleconference said there was resources being allocated to make the images available for more student viewing even after the mission ends.
 - LRK -

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MoonKAM operations are coming to an end on December 12, 2012. You can still register to receive updates about the GRAIL mission, access to classroom activities, and other cool features.


About GRAIL MoonKAM
GRAIL MoonKAM (Moon Knowledge Acquired by Middle school students) is GRAIL's signature education and public outreach program. It is led by Sally Ride Science—the science education company founded by Dr. Sally Ride, America's first woman in space—in collaboration with undergraduate students at the University of California, San Diego. 

GRAIL MoonKAM engages middle schools in the GRAIL mission and lunar exploration. Students from around the world select target areas on the lunar surface and send requests to the GRAIL MoonKAM Mission Operations Center (MOC). Photos of the target areas are sent back by the GRAIL satellites and made available in the Images section of this website. Students use the images to study lunar features such as craters, highlands, and maria while also learning about future landing sites. 

The GRAIL MoonKAM mission began in 2012 when the GRAIL satellites were inserted into orbit around the Moon and the dedicated MoonKAM cameras were activated. The primary mission lasted approximately 80 days. 

Visit our Training page for more information on MoonKAM and training for the upcoming mission. 
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GRAIL MoonKAM Image Gallery
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JPL post about the last expected moments. 
- LRK -

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NASA to Provide Commentary as Grail Moon Mission Ends

Last Flight for GRAIL's Twin SpacecraftThis still image and animation shows the final flight path for NASA's twin Gravity Recovery and Interior Laboratory (GRAIL) mission spacecraft, which will impact the moon on Dec. 17, 2012, around 2:28 p.m. PST. Image credit: NASA/JPL-Caltech/GSFC/ASU
› Full image and caption

December 14, 2012
PASADENA, Calif. - NASA will provide live commentary of the scheduled lunar surface impacts of its twin Gravity Recovery and Interior Laboratory (GRAIL) spacecraft beginning at 2 p.m. PST (5 p.m. EST) Monday, Dec. 17. The event will be broadcast on NASA Television and streamed on the agency's website.

The two probes will hit a mountain near the lunar north pole at approximately 2:28 p.m. PST Monday, bringing their successful prime and extended science missions to an end.

Commentary will originate from the control room at NASA's Jet Propulsion Laboratory in Pasadena, Calif. Coverage will last about 35 minutes and include live interviews with GRAIL team members. GRAIL's final resting place on the moon will be in shadow at the time of impact, so no video documentation of the impacts is expected.

Data from the GRAIL twins are allowing scientists to learn about the moon's internal structure and composition in unprecedented detail. The two probes are being sent purposely into the moon because they do not have enough altitude or fuel to continue science operations.

For NASA TV streaming video, schedule and downlink information, visit: http://www.nasa.gov/ntv . The coverage will also be streamed live on Ustream at: http://www.ustream.tv/nasajpl2 .

Join the conversation on Twitter by following the hashtag #GRAIL. To learn more about all the ways to connect and collaborate with NASA, visit: http://www.nasa.gov/connect . 
snip
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Thanks for looking with me.
- LRK -
=============================================
WHAT THE MIND CAN CONCEIVE, AND BELIEVE, IT WILL ACHIEVE - LRK -

=============================================