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Ancient Space Rubble
Asteroids are rocky fragments left over from the formation our the solar system about 4.6 billion years ago. Most of these chunks of space rubble, sometimes called minor planets, can be found orbiting the Sun in a belt between the orbits of Mars and Jupiter. The Asteroid Belt or Main Belt probably contains millions of asteroids.

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Yvonne Pendleton
Director, Solar System Exploration Research Virtual Institute

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Charles Hall
(1920 - 1999)
Project Manager

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David Kring
Senior Staff Scientist

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Melissa McGrath
Chief Scientist

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Adriana Ocampo
Science Program Manager

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Alyssa Gilbert
Outreach Coordinator

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Richard "Rick" Grammier
(1955 - 2011)
Director for Solar System Exploration

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Vicky Hamilton
Planetary Geologist, Southwest Research Institute

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Peter Jenniskens
Research Scientist

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Rachel Klima
Planetary Geologist

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Amy Lovell
Professor

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Carol Raymond
Deputy Principal Investigator

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Christopher Russell
Dawn Mission Principal Investigator

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Britney Schmidt
Postdoctoral Fellow

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Alan Stern
Principal Investigator, New Horizons

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Shonte Tucker
Spacecraft Thermal Engineer

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Edward Weiler
Retired Associate Administrator, NASA Science Mission Directorate

Picture of Don Yeomans

Don Yeomans
Planetary Scientist