Space

December 19, 2012

Lockheed Martin, NASA de-orbit twin Grail spacecraft into Moon

NASA’s Gravity Recovery And Interior Laboratory mission came to an end today as planned when the Lockheed Martin and the Jet Propulsion Laboratory flight operations team commanded the two spacecraft to de-orbit and impact the surface of the moon.

Lockheed Martin built the twin robotic spacecraft and conducted flight operations for NASA’s JPL since their launch on Sept. 10, 2011.

The first of the orbiters, Ebb, impacted a predetermined mountain near the lunar north pole at 3:28 p.m., MST, with its twin, Flow, hitting nearby 30 seconds later. Both were traveling at 3,760 mph.

Following a successful primary and secondary science mission of mapping the gravity of the moon, the washing machine-sized spacecraft were nearly out of fuel. JPL and Lockheed Martin worked together to send both spacecraft to the surface in a controlled manner at a known location.

“During this extended science campaign, the orbits were reduced to astonishing low altitudes. In some instances, the spacecraft flew less than 1.25 miles above the lunar topography,” said Stu Spath, GRAIL program manager at Lockheed Martin Space Systems Company. “These low trajectories have provided increased science visibility into the moon’s impact craters and other crustal features. Today marks a bittersweet end to a great mission.”

The GRAIL primary mission yielded the highest-resolution gravity field map of any celestial body. Future gravity field models developed from data collected during the extended mission will be of even higher resolution. The map will provide a better understanding of how the moon, Earth and other terrestrial planets in the solar system formed and evolved.

NASA’s Jet Propulsion Laboratory, Pasadena, Calif., manages the GRAIL mission. The Massachusetts Institute of Technology, Cambridge, is home to the mission’s principal investigator, Dr. Maria Zuber. The GRAIL mission is part of the Discovery Program managed at NASA’s Marshall Space Flight Center in Huntsville, Ala.

 




All of this week's top headlines to your email every Friday.


 
 

 

Headlines April 14, 2014

Business: U.S. Navy looks to leverage submarine work to keep costs down - The U.S. Navy hopes to save money and time by leveraging industry investments as it replaces its Ohio-class nuclear-armed submarines with the Virginia-class attack submarines now built by General Dynamics Corp and Huntington Ingalls Industries Inc.  Study raises red flags on California aerospace...
 
 

News Briefs April 14, 2014

U.S. Navy destroyer Zumwalt christened in Maine The U.S. Navy has christened the first ship of its newest class of destroyers, a 610-foot (186-meter)-long warship with advanced technologies and a stealthy design that will reduce its visibility on enemy radars. The warship bears the name of the late Adm. Elmo ìBudî Zumwalt, who became the...
 
 
Navy photograph by Seamn Edward Guttierrez III

Russian aircraft flies near U.S. Navy ship in Black Sea

Navy photograph by Seamn Edward Guttierrez III Sailors man the rails as the Arleigh Burke-class guided-missile destroyer USS Donald Cook arrives at Naval Station Rota, Spain, Feb. 11, 2014. Donald Cook is the first of four Arle...
 

 

45th Space Wing launches NRO Satellite on board Atlas V

The 45th Space Wing successfully launched a United Launch Alliance Atlas V rocket from Space Launch Complex 41, Vandenberg Air Force Base, Calif., at 1:45 p.m. April 10 carrying a classified national security payload. The payload was designed and built by the National Reconnaissance Office. “I am proud of the persistence and focus of the...
 
 

U.S. Air Force selects Cubic for Moroccan P5 air combat training system

Cubic Defense Systems, a subsidiary of Cubic Corporation announced April 11 it has been awarded a contract valued at more than $5 million from the U.S. Air Force to supply its P5 Combat Training System to the Moroccan Air Force. Morocco will join the United States Air Force, Navy, and Marine Corps, along with a...
 
 
Lockheed Martin photograph

NASA’s Orion Spacecraft powers through first integrated system testing

Lockheed Martin photograph Engineers in the Operations and Checkout Building at NASA’s Kennedy Space Center in Florida, perform avionics testing on the Orion spacecraft being prepared for its first trip to space later this ye...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>