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IRON AND ICE
CU-Boulder to participate in NASA mission to land on an asteroid
by Staff Writers
Boulder CO (SPX) May 30, 2011


Slated to launch in 2016, the spacecraft will fly to within three miles of the asteroid - dubbed "1999 RQ36 - in 2020 and begin a six-month, comprehensive mapping project, said Scheeres.

A University of Colorado Boulder team will be part of a mission selected yesterday by NASA to launch a spacecraft to an asteroid and pluck samples from its surface to better understand the formation of the solar system and perhaps even the first inklings of life.

The mission, called the Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer, or OSIRIS-REx, is being led by the University of Arizona and is slated to approach, map and collect samples from a primitive asteroid for return to Earth.

Professor Daniel Scheeres of CU-Boulder's aerospace engineering sciences department is the radio science team leader on the OSIRIS-REx mission, which is expected to bring more than $3 million in research funding to CU-Boulder over the mission lifetime.

The NASA selection of the asteroid mission as part of the New Frontiers Program was a disappointment for CU-Boulder scientists at the Laboratory for Atmospheric and Space Physics led by Professor Larry Esposito, science team leader on a proposed, unmanned mission to land on Venus as part of the program.

In 2009 the LASP-led SAGE mission to Venus was named one of three finalists along with OSIRIS-REx and a proposed effort led by Washington University in St. Louis to sample and return material from the far side of the moon.

As the leader of the OSIRIS-REx radio science team, Scheeres and his colleagues will characterize the asteroid's mass and gravity field as a way to better understand its internal structure.

"We essentially will be weighing the asteroid to see how the mass is distributed across it," he said. "We need to know the mass and gravity field of the asteroid before the spacecraft comes in contact with it."

Scheeres said that at least one CU-Boulder postdoctoral researcher and additional graduate students will be involved in the mission operations, software development and research.

Slated to launch in 2016, the spacecraft will fly to within three miles of the asteroid - dubbed "1999 RQ36 - in 2020 and begin a six-month, comprehensive mapping project, said Scheeres.

The OSIRIS-Rex spacecraft will subsequently conduct a "touch-and-go" on the asteroid, spending about 10 seconds on its surface as a robotic arm collects several ounces of asteroid material for return to Earth, he said.

The mission, excluding the launch vehicle, is expected to cost about $800 million, according to NASA officials.

The mission is in line with objectives outlined by President Barack Obama to reach beyond low-Earth orbit to explore deep space, according to NASA officials, evolving from robotic missions like OSIRIS-REx to future manned missions to asteroids and beyond.

A 2010, study by Scheeres and his colleagues showed that asteroids were not just giant rocks lumbering about in orbit, they are instead constantly changing little "worlds" than can give birth to smaller asteroids that split off to start their own lives as they circle the sun.

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Related Links
OSIRIS-REx at UA
Asteroid and Comet Mission News, Science and Technology






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IRON AND ICE
NASA Selects OSIRIS-REx as Next New Frontiers Mission
Washington DC (SPX) May 27, 2011
NASA has selected the University of Arizona to lead a sample-return mission to an asteroid. The OSIRIS-REx team is led by Dr. Michael Drake, Director of the University of Arizona's Lunar and Planetary Laboratory. NASA Goddard Space Flight Center in Greenbelt, Md., will manage the mission for NASA. Lockheed Martin will build the spacecraft. "This is a critical step in meeting the objectives ... read more


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