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CAPE CANAVERAL, Fla. – – A Gravity Recovery and Interior Laboratory (GRAIL) mission science briefing is held in the NASA Press Site auditorium at NASA's Kennedy Space Center in Florida. From left are DC Agle, NASA Public Affairs; Robert Fogel, NASA’s GRAIL program scientist; Maria Zuber, GRAIL principal investigator with the Massachusetts Institute of Technology; Sami Asmar, GRAIL deputy project scientist, NASA’s Jet Propulsion Laboratory; and Leesa Hubbard, teacher in residence, Sally Ride Science, San Diego. GRAIL is scheduled to launch Sept. 8 aboard a United Launch Alliance Delta II Heavy rocket from Cape Canaveral Air Force Station in Florida.    GRAIL will fly twin spacecraft in tandem around the moon to precisely measure and map variations in the moon's gravitational field. The mission will provide the most accurate global gravity field to date for any planet, including Earth. This detailed information will reveal differences in the density of the moon's crust and mantle and will help answer fundamental questions about the moon's internal structure, thermal evolution, and history of collisions with asteroids. The aim is to map the moon's gravity field so completely that future moon vehicles can safely navigate anywhere on the moon’s surface. For more information, visit http://www.nasa.gov/grail. Photo credit: NASA/Kim Shiflett KSC-2011-6769

CAPE CANAVERAL, Fla. – – A Gravity Recovery and Interior Laboratory (G...

CAPE CANAVERAL, Fla. – – A Gravity Recovery and Interior Laboratory (GRAIL) mission science briefing is held in the NASA Press Site auditorium at NASA's Kennedy Space Center in Florida. From left are DC Agle, N... More

CAPE CANAVERAL, Fla. – – Sami Asmar, GRAIL deputy project scientist, NASA’s Jet Propulsion Laboratory, participates in the Gravity Recovery and Interior Laboratory (GRAIL) mission science briefing in the NASA Press Site auditorium at NASA's Kennedy Space Center in Florida. GRAIL is scheduled to launch Sept. 8 aboard a United Launch Alliance Delta II Heavy rocket from Cape Canaveral Air Force Station in Florida.    GRAIL will fly twin spacecraft in tandem around the moon to precisely measure and map variations in the moon's gravitational field. The mission will provide the most accurate global gravity field to date for any planet, including Earth. This detailed information will reveal differences in the density of the moon's crust and mantle and will help answer fundamental questions about the moon's internal structure, thermal evolution, and history of collisions with asteroids. The aim is to map the moon's gravity field so completely that future moon vehicles can safely navigate anywhere on the moon’s surface. For more information, visit http://www.nasa.gov/grail. Photo credit: NASA/Kim Shiflett KSC-2011-6766

CAPE CANAVERAL, Fla. – – Sami Asmar, GRAIL deputy project scientist, N...

CAPE CANAVERAL, Fla. – – Sami Asmar, GRAIL deputy project scientist, NASA’s Jet Propulsion Laboratory, participates in the Gravity Recovery and Interior Laboratory (GRAIL) mission science briefing in the NASA P... More

CAPE CANAVERAL, Fla. – – A Gravity Recovery and Interior Laboratory (GRAIL) mission science briefing is held in the NASA Press Site auditorium at NASA's Kennedy Space Center in Florida. From left are Robert Fogel, NASA’s GRAIL program scientist; Maria Zuber, GRAIL principal investigator with the Massachusetts Institute of Technology; Sami Asmar, GRAIL deputy project scientist, NASA’s Jet Propulsion Laboratory; and Leesa Hubbard, teacher in residence, Sally Ride Science, San Diego. GRAIL is scheduled to launch Sept. 8 aboard a United Launch Alliance Delta II Heavy rocket from Cape Canaveral Air Force Station in Florida.    GRAIL will fly twin spacecraft in tandem around the moon to precisely measure and map variations in the moon's gravitational field. The mission will provide the most accurate global gravity field to date for any planet, including Earth. This detailed information will reveal differences in the density of the moon's crust and mantle and will help answer fundamental questions about the moon's internal structure, thermal evolution, and history of collisions with asteroids. The aim is to map the moon's gravity field so completely that future moon vehicles can safely navigate anywhere on the moon’s surface. For more information, visit http://www.nasa.gov/grail. Photo credit: NASA/Kim Shiflett KSC-2011-6767

CAPE CANAVERAL, Fla. – – A Gravity Recovery and Interior Laboratory (G...

CAPE CANAVERAL, Fla. – – A Gravity Recovery and Interior Laboratory (GRAIL) mission science briefing is held in the NASA Press Site auditorium at NASA's Kennedy Space Center in Florida. From left are Robert Fog... More

CAPE CANAVERAL, Fla. – Sami Asmar, GRAIL deputy project scientist at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., speaks to a group of Tweetup participants at the Kennedy Space Center Visitor Complex in Florida during prelaunch activities for the agency’s Gravity Recovery and Interior Laboratory (GRAIL) mission. Participants toured NASA’s Kennedy Space Center and got a close-up view of Space Launch Complex 17B at Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter.    GRAIL will fly twin spacecraft in tandem around the moon to precisely measure and map variations in the moon’s gravitational field. The mission will provide the most accurate global gravity field to date for any planet, including Earth. This detailed information will reveal differences in the density of the moon’s crust and mantle and will help answer fundamental questions about the moon’s internal structure, thermal evolution, and history of collisions with asteroids. The aim is to map the moon’s gravity field so completely that future lunar vehicles can safely navigate anywhere on the moon’s surface. Launch is scheduled for 8:37:06 a.m. EDT Sept. 8. For more information, visit http://www.nasa.gov/grail. Photo credit: NASA/Gianni Woods KSC-2011-6795

CAPE CANAVERAL, Fla. – Sami Asmar, GRAIL deputy project scientist at N...

CAPE CANAVERAL, Fla. – Sami Asmar, GRAIL deputy project scientist at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., speaks to a group of Tweetup participants at the Kennedy Space Center Visitor Complex i... More

Former Capt. William D. Swenson receives the Medal

Former Capt. William D. Swenson receives the Medal

Former Capt. William D. Swenson receives the Medal of Honor from President Barack Obama in the East Room of the White House, Oct. 15, 2013. In six hours of continuous fighting against more than 60 well-armed, ... More

Medal of Honor recipient, former Capt. William D. Swenson,

Medal of Honor recipient, former Capt. William D. Swenson,

Medal of Honor recipient, former Capt. William D. Swenson, addresses the media outside of the White House, Oct. 15, 2013. In six hours of continuous fighting against more than 60 well-armed, well-positioned ene... More

President Barack Obama congratulates former Capt. William

President Barack Obama congratulates former Capt. William

President Barack Obama congratulates former Capt. William D. Swenson just after he presented him with the Medal of Honor in the East Room of the White House, Oct. 15, 2013. In six hours of continuous fighting ... More

President Barack Obama grips the shoulders of former

President Barack Obama grips the shoulders of former

President Barack Obama grips the shoulders of former Capt. William D. Swenson just after he presented him with the Medal of Honor in the East Room of the White House, Oct. 15, 2013. In six hours of continuous f... More

Chief Warrant Officers 4 Stradley observes the presentation

Chief Warrant Officers 4 Stradley observes the presentation

Chief Warrant Officers 4 Stradley observes the presentation of the Medal of Honor to former Capt. William D. Swenson by President Barack Obama in the East Room of the White House, Oct. 15, 2013. In six hours of... More

Former Capt. William D. Swenson applauds the fallen

Former Capt. William D. Swenson applauds the fallen

Former Capt. William D. Swenson applauds the fallen and wounded comrades that he fought alongside with in Afghanistan during his Medal of Honor ceremony in the East Room of the White House, Oct. 15, 2013. In si... More

President Barack Obama gives remarks during a Medal

President Barack Obama gives remarks during a Medal

President Barack Obama gives remarks during a Medal of Honor ceremony in honor of former Capt. William D. Swenson in the East Room of the White House, Oct. 15, 2013. In six hours of continuous fighting against... More

President Barack Obama gives remarks during a Medal

President Barack Obama gives remarks during a Medal

President Barack Obama gives remarks during a Medal of Honor ceremony in honor of former Capt. William D. Swenson in the East Room of the White House, Oct. 15, 2013. In six hours of continuous fighting against ... More

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Chileatpanameri00buffgoog 0168

Chile at the Pan-American Exposition: Brief Notes on Chile and General Catalogue of Chile Exhibits Published 1901