Planetary scientists sharing ideas and discoveries.

Planetary Science Research Discoveries (PSRD) is an educational site sharing the latest research on meteorites, planets, and other solar system bodies being made by NASA-sponsored scientists. The web site is supported by the Cosmochemistry Program of NASA's Science Mission Directorate and by Hawai'i Space Grant Consortium and is a vital link for planetary and space sciences, and for learning how science works.

Supported by NASA's Cosmochemistry Program and Hawai`i Space Grant Consortium.

Archive of Cosmochemistry Illustrated

These annotated slide sets are associated with PSRD articles, which provide context, additional graphics, and references.

DATE POSTED	PSRDpresents (PowerPoint Slides)	ARTICLE
29 APRIL 08	A Farside Geochemical Window into the Moon Findings show geochemical enhancements in the Dewar region are caused by thorium-rich mare basalt fragments in the regolith.	Dewar-Th.html PSRD-Dewar-Th.pdf
22 FEB 08	Compositional Balancing Before Moon Formation The identical oxygen isotopic composition of Earth and Moon might be explained by exchange of material between the proto-Earth and the surrounding proto-lunar disk.	EarthMoonFormation.html PSRD-EarthMoonFormation.pdf
19 DEC 07	Chips Off an Old Lava Flow Lunar meteorite Kalahari 009 contains fragments of basalt about 4.35 billion years old, a record-breaking old age for mare basalt.	cryptomareSample.html PSRD-cryptomareSample.pdf
27 NOV 07	Getting to Know Vesta Scientists are primed with geochemical data from HED meteorites for Dawn's encounter with asteroid 4 Vesta.	HEDs-Vesta.html PSRD-HEDs-Vesta.pdf
30 OCT 07	Did an Impact Make the Mysterious Microscopic Magetite Crystals in ALH84001? Tiny crystals of magnetite in Martian meteorite ALH 84001 might have been made when shock waves decomposed iron carbonate.	magnetite-origin.html PSRD-magnetite-origin.pdf
17 SEPT 07	Melted Crumbs from Asteroid Vesta Researchers studying some of the rarest of the smallest meteorites call them melted crumbs from asteroid Vesta.	cosmicSpherules.html PSRD-cosmicSpherules.pdf
6 JULY 07	The Sun's Crowded Delivery Room Isotopes in meteorites suggest that the Sun formed in a dense cluster of stars.	iron-60.html PSRD-iron-60.pdf
19 JUNE 07	Oxidants from Pulverized Minerals Laboratory measurements of hydrogen peroxide produced from crushed basaltic minerals immersed in water have important implications for Martian and lunar dust.	H2O2.html PSRD-H2O2.pdf
18 APRIL 07	When Worlds Really Did Collide Cosmochemical studies and dynamical models of protoplanetary collisions suggest a new origin for iron meteorites.	irons.html PSRD-irons.pdf


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