The Diverse Rocky Materials that Formed Comets

The Diverse Rocky Materials that Formed Comets

Don Brownlee of the University of Washington, principal investigator of NASA's Stardust mission, examines the rocky particles Stardust collected from an active comet and what their high-temperature origins reveal about how comets formed. More…


Horton E. Newsom (1952–2024)

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Horton Elwood Newsom was killed in a car accident in Albuquerque, NM, April 19, 2024. Hort was widely known and respected in our community for his work in experimental and analytical geochemistry; impact cratering; and his active participation in spacecraft missions at Mars. More…