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 Comet Articles

Articles listed by publication date.

DATE POSTED

HEADLINE ARTICLES

PDF VERSIONS

18 MAR 2016 Primordial Molecular Cloud Material in Metal-Rich Carbonaceous Chondrites
by G. Jeffrey Taylor
Dust from the molecular cloud that gave birth to the Sun may be preserved in objects formed in the outer reaches of the Solar System.
pdf link, Primoridal Molecular Cloud Material in Metal-rich CC
FEB 2015 Circumstances of Cubanite in a Comet and Asteroid
by Linda M. V. Martel
CosmoSparks Report - Laboratory synthesis of copper-iron sulfide helps establish conditions of its formation.
pdf link, Circumstances of Cubanite in a Comet and Asteroid
MARCH 2013 Studying the Most Primitive Extraterrestrial Dust
by Linda M. V. Martel
CosmoSparks Report - Isotopic compositions and presolar grain abundances from interplanetary dust particles.
pdf link, Studying the Most Primitive Extraterrestrial Dust
21 FEB 2012 Chronicle of a Chondrule's Travels
by Linda M. V. Martel
Isotopic measurements of a chondrule in a Comet Wild 2 grain tell the story of outward migration of solar nebula solids, helping to set the formation age of Jupiter.
pdf link, Chronicle of a Chondrule's Travels
SEPT 2011 Cosmochemical Building Blocks called GEMS
by Linda M. V. Martel
CosmoSparks Report - The unfolding story of grains of Glass with Embedded Metal and Sulfides found in interplanetary dust particles.
pdf link, Cosmochemical Building Blocks called GEMS
JULY 2011 Shooting Iron Sulfides into Aluminum Foil to Better Understand Comet Wild 2
by Linda M. V. Martel
CosmoSparks Report - Laboratory simulations of impacts on Stardust Al foils.
pdf link, Shooting Iron Sulfides into Aluminum Foil to Better Understand Comet Wild 2
22 JUNE 2011 A Traveling CAI
by G. Jeffrey Taylor
Oxygen isotopes show that a calcium-aluminum-rich inclusion wandered throughout the inner Solar System before being incorporated into an asteroid.
pdf link, A Traveling CAI
JUNE 2011 Looking After and Preserving NASA's Extraterrestrial Samples
by Linda M. V. Martel
CosmoSparks Report - The work of NASA's Astromaterials Acquisition and Curation Office.
pdf link, Looking After and Preserving NASA's Extraterrestrial Samples
SEPT 2010 Brownleeite: The First New Mineral Identified From a Comet
by Linda M. V. Martel
CosmoSparks Report - Manganese silicide discovered in an IDP.
pdf link, Brownleeite: The First New Mineral Identified From a Comet
JULY 2010 Controlling Contamination Before, During, and After Spaceflight
by Linda M. V. Martel
CosmoSparks Report - NASA Stardust Mission.
pdf link, Controlling Contamination Before, During, and After Spaceflight
6 JAN 2010 Violent Adolescent Planet Caught Infrared Handed
by David Trang and Eric Gaidos
Infrared telescopic observations may have observed dust from an impact between protoplanets in the disk surrounding young star HD172555.
pdf link, Violent Adolescent Planet Caught Infrared Handed
14 DEC 08 Wee Rocky Droplets in Comet Dust
by G. Jeffrey Taylor and Linda M. V. Martel
Tiny flash-melted objects in dust collected from comet Wild 2 were transported from the inner Solar System to the outer reaches where comets formed.
pdf link, Wee Rocky Droplets in Comet Dust
25 JAN 07 Organic Globules from the Cold Far Reaches of the Proto-Solar Disk
by G. Jeffrey Taylor
Hollow organic globules in the Tagish Lake meteorite probably formed far from the proto-Sun, maybe even in interstellar space before our Solar System formed.
pdf link, Organic Globules from the Proto-Solar Disk
31 JAN 06 Cosmochemistry from Nanometers to Light-Years
by G. Jeffrey Taylor
Cosmochemists and astronomers test theories on the formation of stars and planets.
pdf link, Cosmochemistry from Nanometers to Light-Years
14 FEB 97 1997 Apparition of Comet Hale-Bopp
by Karen J. Meech
With its closest approach to Earth on March 22, 1997, comet Hale-Bopp gave a spectacular night time show. This article also covers the historical development of cometary science and the scientific importance of comets.
pdf link, 1997 Apparition of Comet Hale-Bopp
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