Dawn: a journey to the beginning of the solar system

Details Dawn: a journey to the beginning of the solar system Dawn: a journey to the beginning of the solar system

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500...63r&link_type=abstract

In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed

Physics

3

Space Missions: Solar System

Scientific paper

Dawn, NASA's ninth Discovery mission, is scheduled to launch on May 27, 2006 on a journey that will take it into orbit about the two most massive asteroids 4 Vesta and 1 Ceres. Dawn's goal is to understand the conditions and processes present at the solar system's earliest epoch, and the role of water content and size in planetary evolution. To this end Dawn carries a framing camera, a mapping spectrometer, a laser altimeter, a gamma-ray/neutron spectrometer, a magnetometer and a gravity investigation. Dawn uses solar arrays to power its xenon ion engine that provides thrust at an efficiency that is ten times greater than chemical rockets provide. Dawn is a partnership between UCLA, JPL, and the American, German and Italian space agencies.

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