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 Earth Articles

DATE POSTED	ARTICLES
22 FEB 08	Compositional Balancing Before Moon Formation by G. Jeffrey Taylor 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.	PSRD-EarthMoonFormation.pdf
7 JULY 05	Squeezing and Heating Rock to Scope Out How Metallic Iron Dribbled to the Center of the Earth by G. Jeffrey Taylor Experiments showing how cobalt and nickel concentrate in molten metal shed light on the formation of Earth's metallic core.	PSRD-cobalt_and_nickel.pdf
13 APRIL 05	Antarctic Guide to Martian Weathering by Linda M. V. Martel Soils in the Antarctic Dry Valleys contain traces of silicate alteration products and secondary salts much like those found in Martian meteorites.	PSRD-DryValleysSoils.pdf
9 MAR 04	Tiny Traces of a Big Asteroid Breakup by Linda M. V. Martel Fossil meteorites and chromite grains record a hundred-fold increase in the number of meteorites that fell 480 million years ago compared to the meteorite influx today.	PSRD-fossilMeteorites.pdf
28 FEB 02	Searching Antarctic Ice for Meteorites by Linda M. V. Martel Silver anniversary season: The vigorous life and times of the ANSMET team at Meteorite Hills resulted in a new set of 336 meteorites collected off the ice.	PSRD-meteoriteSearch.pdf
28 FEB 01	Buckyballs and Gases May Mark Massive Extinction by G. Jeffrey Taylor Helium and argon isotopes in fullerenes suggest an impact triggered the incredible extinction that marks the end of the Permian period.	PSRD-permianImpact.pdf
31 DEC 98	Origin of the Earth and Moon by G. Jeffrey Taylor First hand report of the December 1998 conference on the formation and very early history of the Earth and Moon.	PSRD-OriginEarthMoon.pdf
11 DEC 97	Damage by Impact: the case at Meteor Crater, Arizona . by Linda M. V. Martel A look at the pre- and post-impact environments at Meteor Crater, Arizona provides insight into Earth's impact history. Just how often does this sort of impact event occur on Earth? We'll examine the potential hazards.	PSRD-impactBlast.pdf
21 DEC 96	Life Underground. by G. Jeffrey Taylor Some bacteria live on nothing but rock and water, extracting energy from chemical reactions rather than from sunlight.	PSRD-LifeUnderground.pdf
21 DEC 96	Meteorites from Mars, Rocks from Canada. by Rachel C. Friedman There is more to Mars rocks than suspected fossils. Scientists are using ancient lava flows in eastern Ontario to understand the formation of a group of meteorites from Mars.	PSRD-Nakhlites.pdf
18 OCT 96	Rules for identifying ancient life. by G. Jeffrey Taylor Scientists seeking the oldest fossils on Earth have developed rules for establishing that they have found fossils and that the fossils formed in place.	PSRD-IDRules.pdf


	[ About PSRD \| Archive \| Search \| Subscribe ] [ Glossary \| General Resources \| Comments \| Top of page ]
http://www.psrd.hawaii.edu psrd@higp.hawaii.edu