Planetary Science Research Discoveries

Planetary scientists sharing ideas and discoveries.

Planetary Science Research Discoveries (PSRD) is an educational site sharing the latest research by NASA-sponsored scientists on meteorites, asteroids, planets, moons, and other materials in our Solar System. The website is supported by the Planetary Science Division 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.

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Archive of Space Weathering Articles

Articles listed by publication date.

DATE POSTED

HEADLINE ARTICLES

PDF VERSIONS

MAY 2016 An Improved Calibration of Reflectance Data from LOLA
by Linda M. V. Martel
CosmoSparks Report - An Icarus special issue presents new results from NASA's Lunar Reconnaissance Orbiter, including LOLA data, relevant to space weathering and many other topics of interest.
pdf link, Improved Calibration of Reflectance Data from LOLA
FEB 2016 Space Weathering on the Moon–By Degrees Latitude
by Linda M. V. Martel
CosmoSparks Report - Researchers propose that reduced solar wind flux toward higher latitudes is the reason for systematic near-infrared spectral variations in lunar maria.
pdf link, Space Weathering on the Moon
31 AUG 2011 Samples from Asteroid Itokawa
by G. Jeffrey Taylor and Linda M. V. Martel
Samples returned from asteroid Itokawa by the Hayabusa mission provide ground truth for astronomical observations and reveal that the little asteroid is eroding at a rate of tens of centimeters per million years.
pdf link, Samples from Asteroid Itokawa
FEB 2011 Asteroid Itokawa Samples
by Linda M. V. Martel
CosmoSparks Report - Hayabusa Mission results show definitive evidence for LL chondrite compositions of minerals in Itokawa Samples.
pdf link, Asteroid Itokawa Samples
10 AUG 09 Space Weathering Agent: Solar Wind
by Linda M. V. Martel
Bombardment of helium ions on olivine in the laboratory simulates space weathering of asteroids and other airless bodies.
pdf link, Space Weathering Agent: Solar Wind
29 APRIL 08 A Farside Geochemical Window into the Moon
by Linda M. V. Martel
Findings show geochemical enhancements in the Dewar region are caused by thorium-rich mare basalt fragments in the regolith.
pdf link, Farside Geochemical Window into the Moon
8 NOV 06 Recent Gas Escape from the Moon
by G. Jeffrey Taylor
Gases may have escaped from the Moon as recently as a million years ago, implying that the lunar interior is not as lethargic as conventional wisdom dictates.
pdf link, Recent Gas Escape from the Moon
10 DEC 04 Composition of the Moon's Crust
by Linda M. V. Martel
New empirical calibrations of Lunar Prospector and Clementine data yield improved global maps of Th, K, and FeO.
pdf link, Composition of the Moon's Crust
28 SEPT 04 Lunar Crater Rays Point to a New Lunar Time Scale
by Linda M. V. Martel
Optical maturity maps of rays, derived from Clementine multispectral data and calibrated with lunar sample analyses, provide a new way to define the two youngest time stratigraphic units on the Moon.
pdf link, Lunar Crater Rays Point to a New Lunar Time Scale
5 JULY 04 New Mineral Proves an Old Idea about Space Weathering
by Linda M. V. Martel
A newly discovered vapor-deposited iron silicide in a lunar meteorite has been named hapkeite.
pdf link, New Mineral Proves an Old Idea about Space Weathering
26 FEB 02 The Composition of Asteroid 433 Eros
by G. Jeffrey Taylor
X-rays and reflected light suggest that asteroid 433 Eros is similar in composition to the most common type of meteorite--maybe.
pdf link, Composition of Asteroid 433 Eros
22 OCT 01 New Data, New Ideas, and Lively Debate about Mercury
by G. Jeffrey Taylor
A hundred scientists gathered to share new data and ideas about the important little planet closest to the Sun.
pdf link, New Data, New Ideas about Mercury
20 OCT 97 Moonbeams and Elements
by G. Jeffrey Taylor
The amount of light reflected off the Moon can be used to determine elemental abundances from orbit.
pdf link, Moonbeams and Elements
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