Abstract The Solid State Imaging (SSI) experiment on the Galileo Orbiter spacecraft utilizes a
high-resolution (1500 mm focal length) television camera with an 800× 800 pixel virtual …

Deep Impact collided with comet Tempel 1, excavating a crater controlled by gravity. The
comet's outer layer is composed of 1-to 100-micrometer fine particles with negligible …

On 29 October 1991, the Galileo spacecraft carried out the first ever encounter of a minor
planet, flying by Asteroid 951 Gaspra at a distance of 1600 km. We summarize findings …

Observations of the optical extreme ultraviolet spectrum of the Jupiter planetary system
during the Voyager 1 encounter have revealed previously undetected physical processes of …

Ground-based spectroscopy of Jupiter's moon Europa, combined with gravity data, suggests
that the satellite has an icy crust roughly 150 km thick and a rocky interior 1, 2, 3, 4. In …

We provide an overview of the execution, data, and results of the solid state imaging (SSI)
experiment at the encounter of the Galileo spacecraft with the asteroid 243 Ida. Ninety-six …

Understanding how comets work—what drives their activity—is crucial to the use of comets
in studying the early solar system. EPOXI (Extrasolar Planet Observation and Deep Impact …

It has been proposed that Jupiter's satellite Europa currently possesses a global subsurface
ocean of liquid water. Galileo gravity data verify that the satellite is differentiated into an …

The ice-rich surface of the jovian satellite Europa is sparsely cratered, suggesting that this
moon might be geologically active today. Moreover, models of the satellite's interior indicate …

Spitzer Space Telescope imaging spectrometer observations of comet 9P/Tempel 1 during
the Deep Impact encounter returned detailed, highly structured, 5-to 35-micrometer spectra …