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 Mars Articles

DATE POSTED	ARTICLES
29 JAN 07	Did Martian Meteorites Come From These Sources? by Linda M. V. Martel Researchers find large rayed craters on Mars and consider the reasons why they may be launching sites of Martian meteorites.	PSRD-MarsRayedCraters.pdf
19 DEC 06	Squeezing Meteorites to Reveal the Martian Mantle by G. Jeffrey Taylor Experiments at high temperature and pressure give clues to the composition of the interior of Mars.	PSRD-Y-980459.pdf
26 OCT 06	LIBS: Remote Chemical Analysis by Linda M. V. Martel Laser-induced breakdown spectroscopy (LIBS) is an active remote sensing technique used for the rapid characterization of elemental compositions of materials.	PSRD-libs.pdf
31 MAR 06	A Primordial and Complicated Ocean of Magma on Mars by G. Jeffrey Taylor Geophysical and geochemical calculations indicate that total melting of Mars during its formation could have led to large-scale heterogeneities in its mantle.	PSRD-mars_magmaOcean.pdf
27 DEC 05	Magma and Water on Mars by G. Jeffrey Taylor Martian meteorites tell us part of the fascinating story about when volcanoes erupted and water flowed.	PSRD-Magma-WaterOnMars.pdf
29 JULY 05	Martian Meteorites Record Surface Temperatures on Mars by G. Jeffrey Taylor Gases trapped in Martian meteorites indicate that Mars has been a cold desert for a long, long time.	PSRD-Mars_paleotemp.pdf
31 JAN 05	Recent Activity on Mars: Fire and Ice by Linda M. V. Martel New images from Mars Express show evidence of recent volcanic and glacial activity on Mars, consistent with what we know from Martian meteorites and previous evaluations of the planet's internal heat production and climate.	PSRD-MarsRecently.pdf
23 DEC 04	Cosmochemistry and Human Exploration by G. Jeffrey Taylor Cosmochemistry plays an important role in developing local resources on the Moon and Mars, essential to sustained human presence in space.	PSRD-spaceResources.pdf
1 JULY 04	Carbonates in ALH 84001: Part of the Story of Water on Mars by Catherine M. Corrigan The study of multi-generational carbonate assemblages in Martian meteorite ALH 84001 reveals a complex history of crystal formation, growth, and alteration.	PSRD-carbonatesALH84001.pdf
23 JUNE 04	The Multifarious Martian Mantle by G. Jeffrey Taylor Detailed analyses of Martian meteorites reveal that the planet's interior preserves distinctive regions that formed 4.5 billion years ago.	PSRD-martianMantle.pdf
28 NOV 03	Hafnium, Tungsten, and the Differentiation of the Moon and Mars by G. Jeffrey Taylor Experiments help us understand the timing of core formation and nature of initial melting in the Moon and Mars.	PSRD-Hf-W.pdf
7 NOV 03	Pretty Green Mineral -- Pretty Dry Mars? by Linda M. V. Martel The discovery of olivine-bearing rocks on Mars underscores the need to understand weathering rates of silicates in the Martian environment.	PSRD-olivineMars.pdf
28 OCT 03	Show Me the Carbonates by Linda M. V. Martel Carbonate minerals intermingle with silicates in the Martian surface dust.	PSRD-carbonatesMars.pdf
29 AUG 03	Gullied Slopes on Mars by Linda M. V. Martel Do the Martian gullies tell us something about the stability and distribution of near-surface water?	PSRD-MartianGullies.pdf
16 JULY 03	Ancient Floodwaters and Seas on Mars by Linda M. V. Martel Surface deposits within the northern lowlands support the oceans hypothesis.	PSRD-MartianSea.pdf
13 MAR 03	Gray Iron Oxide on Mars by Linda M. V. Martel A deposit of gray hematite in Terra Meridiani may suggest that water once circulated through the rock layers in this region of Mars.	PSRD-Meridiani.pdf
30 AUG 02	The Wet, Oxidizing Crust of Mars by G. Jeffrey Taylor Analysis of isotopes and oxide minerals in Martian meteorites indicate that many magmas interacted with a wet, oxidizing crust as they oozed from the Martian mantle to its reddish surface.	PSRD-oxidation.pdf
5 JUNE 02	Dirty Ice on Mars by G. Jeffrey Taylor Instruments on the Odyssey spacecraft show that a lot of dirty ice sits within a meter of the surface in the south polar latitudes of Mars.	PSRD-MarsGRSice.pdf
22 MAY 02	The Tricky Business of Identifying Rocks on Mars by G. Jeffrey Taylor A new analysis of thermal emission spectra suggests a new interpretation for the composition of the Martian surface.	PSRD-MarsTES.pdf
26 JUNE 01	If Lava Mingled with Ground Ice on Mars by Linda M. V. Martel Planetary geologists use Icelandic volcanic formations called "rootless cones" to explain clusters of small cones on Mars.	PSRD-lavaIceMars.pdf
14 JUNE 01	Outflow Channels May Make a Case for a Bygone Ocean on Mars by Linda M. V. Martel Mars Orbiter Laser Altimeter data have given scientists a new perspective of the dry channels in Chryse Planitia and a new approach to testing the Martian ancient ocean hypothesis.	PSRD-MarsChryse.pdf
24 APRIL 01	Gullies and Canyons, Rocks and Experiments: The Mystery of Water on Mars by G. Jeffrey Taylor The combination of analyses of Martian meteorites and laboratory experiments helps scientists understand how water in magma has changed the Martian crust and surface.	PSRD-waterFromRocks.pdf
21 NOV 00	Mining the Moon, Mars, and Asteroids by G. Jeffrey Taylor Applied cosmochemistry plays a key role in plans to use the resources of the Moon, Mars, and asteroids.	PSRD-mining.pdf
24 MAY 00	Liquid Water on Mars: The Story from Meteorites by G. Jeffrey Taylor Martian meteorites may have reacted with liquid water on Mars intermittently during the past 650 million years.	PSRD-wetMars.pdf
17 DEC 99	Zapping Mars Rocks with Gamma Rays by G. Jeffrey Taylor One way to sterilize samples from Mars is to zap them with gamma rays. Will this ruin the rock for other studies? Apparently not.	PSRD-gammaRays.pdf
24 SEPT 98	For a Cup of Water on Mars. by Linda M. V. Martel Gusev crater's long history as a depositional site for water-laid sediments makes it a priority site for future biological explorations.	PSRD-GusevMars.pdf
18 DEC 97	Fossils in Martian Meteorite: Real or Imagined? by G. Jeffrey Taylor Some scientists suggest that the small, wormy structures in martian meteorite ALH84001 are features of the crystals in the rock, decorated with artifacts introduced during sample preparation, not nanofossils. The discoverers of the fossil-like objects disagree.	PSRD-LifeonMarsUpdate2.pdf
22 AUG 97	The Martian Interior. by G. Jeffrey Taylor Data from martian meteorites and high pressure experiments give us a glimpse of the interior of the planet Mars.	PSRD-InsideMars.pdf
22 AUG 97	Testing the Evidence for Life on Mars: NASA and NSF Fund New Studies of Martian Meteorite . by G. Jeffrey Taylor Newly awarded grants will fund 23 projects to further analyze martian meteorite ALH84001 and the details that led to last year's announcement of possible ancient martian life.	PSRD-NewAwards.pdf
22 MAY 97	Shocked Carbonates may Spell N-o L-i-f-e in Martian Meteorite ALH84001. by Edward R. D. Scott Evidence for redistribution of carbonates by shock casts doubt on fossil life in martian meteorite.	PSRD-ShockedCarb.pdf
22 MAY 97	Low-temperature Origin of Carbonates Consistent with Life in ALH84001. by G. Jeffrey Taylor Evidence from magnetism and isotopes consistent with life in martian meteorite.	PSRD-LowTempCarb.pdf
31 MAR 97	Life on Mars--The Debate Continues. by G. Jeffrey Taylor Scientists continue their search for answers to the question of fossil life in a martian meteorite. Have we found evidence for life, nonbiologic processes or contamination? The great debate is far from over.	PSRD-LifeonMarsUpdate.pdf
31 MAR 97	Not Quite a Meeting of the Minds. by G. Jeffrey Taylor The debate about life in martian meteorite ALH 84001 at the 28th Lunar and Planetary Science Conference was vigorous. Some investigators will turn out to be right, others wrong, but there will be no losers.	PSRD-LPSCreport.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	Life on Mars? by G. Jeffrey Taylor A group of scientists, headed by Dr. David McKay of Johnson Space Center, have made a case for ancient life on Mars based on features in a meteorite found in Antarctica. Do we indeed have evidence of life on Mars?	PSRD-LifeonMars.pdf


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