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 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.

about archive search subscribe glossary comments

Supported by NASA's SMD Cosmochemistry Program and Hawai'i Space Grant Consortium.     rss RSS feed     + Share

Archive of PSRDpresents Slide Sets

These annotated slide sets are associated with PSRD articles, which provide the full context, additional graphics, and references. If your browser does not open the notes associated with the slides, then please download the file to view the entire presentation.



DATE POSTED

SLIDE SETS

ARTICLE LINKS

16 Sept 2013 Discovery of a New Garnet Mineral, Hutcheonite, in the Allende Meteorite
A new titanium-rich garnet mineral discovered in a CAI in Allende is named in honor of Ian D. Hutcheon.
(html), (pdf)
30 May 2013 Magnesium-rich Basalts on Mercury
Crystallization modeling using the MELTS computer code with MESSENGER-derived compositions finds Mg-rich lavas on Mercury.
(html), (pdf)
30 April 2013 Meteoritic Minerals Tell a Story of Multistage Cooling, Break-up, and Reassembly of an Asteroid
Compositional variations in minerals in H-chondrites indicate at least two vastly different cooling rates at different temperatures, suggesting fragmentation, cooling of the fragments, and reassembly into a second-generation rubble pile.
(html), (pdf)
30 Jan 2013 New Martian Meteorite is Similar to Typical Martian Crust
A newly-identified Martian meteorite from Northwest Africa is not like other Martian meteorites, but has a chemical composition similar to the average Martian crust.
(html), (pdf)
10 Dec 2012 Zinc Isotopes Provide Clues to Volatile Loss During Moon Formation
Ratios of zinc isotopes indicate evaporation of zinc (and other volatiles) during formation of the Moon.
(html), (pdf)
16 Nov 2012 Dating Transient Heating Events in the Solar Protoplanetary Disk
Startlingly precise dating of components in primitive meteorites indicate contemporaneous formation of calcium-aluminum-rich inclusions (CAIs) and chondrules.
(html), (pdf)
28 June 2012 Leftovers from Ancient Lunar Impactors
A systematic search for meteorite fragments in ancient regolith breccias confirms chondritic impactors on the Moon.
(html), (pdf)
30 May 2012 Titanium Isotopes Provide Clues to Lunar Origin
The titanium isotopic mix is essentially identical in Earth and Moon, important new information with implications for the origin of the planets.
(html), (pdf)
15 Mar 2012 Young Tectonic Events in Martian Chaotic Terrain
Study of a faulted landslide in Aureum Chaos and its ramifications.
(html), (pdf)
21 Feb 2012 Chronicle of a Chondrule's Travels
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.
(html), (pdf)
15 Dec 2011 Formation of Carbonate Minerals in Martian Meteorite ALH 84001 from Cool Water Near the Surface of Mars
A new approach to thermometry using isotopic compositions of carbon and oxygen indicates that carbonate minerals in Martian meteorite ALH 84001 formed at 18 ± 4 oC.
(html), (pdf)
31 Aug 2011 Samples from Asteroid Itokawa
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.
(html), (pdf)
8 Aug 2011 Crystallizing the Lunar Magma Ocean
Lab experiments help test ideas for the Moon's chemical composition and how its crust formed.
(html), (pdf)
22 June 2011 A Traveling CAI
Oxygen isotopes show that a calcium-aluminum-rich inclusion wandered throughout the inner Solar System before being incorporated into an asteroid.
(html), (pdf)
27 May 2011 Timeline of Martian Volcanism
High-resolution images allow a larger range of crater sizes to date calderas and the last major periods of volcanic activity on Mars.
(html), (pdf)
7 April 2011 Wet, Carbonaceous Asteroids: Altering Minerals, Changing Amino Acids
Aqueous alteration in asteroids containing organic compounds leads to formation of hydrous minerals and changes in the mix of amino acids.
(html), (pdf)
31 Jan 2011 Mineral Abundances in Martian Soils
Mineral abundances calculated from a trio of datasets reveal mixtures of unrelated igneous and alteration minerals in Martian dark soils.
(html), (pdf)
30 Nov 2010 Supernova Confetti in Meteorites
Pre-solar grains carrying anomalous chromium-54 show evidence for formation in a supernova.
(html), (pdf)
30 Sept 2010 Unraveling the Origin of the Lunar Highlands Crust
Lunar meteorites contain clasts that may plausibly be samples of post-magma-ocean plutons that helped build the highlands crust.
(html), (pdf)
25 Aug 2010 New View of Gas and Dust in the Solar Nebula
The current view holds that gas and dust in the solar nebula began with the same oxygen isotopic composition, then changed by processes in the nebula. A new view suggests that dust and gas had vastly different mixtures of oxygen isotopes in the first place.
(html), (pdf)
1 July 2010 Damp Moon Rising
Cosmochemists find more evidence for water inside the Moon, showing that it is not the bone-dry place we thought.
(html), (pdf)
10 June 2010 Formation of Stony-Iron Meteorites in Early Giant Impacts
Cosmochemical studies and dynamical models of hit-and-run planetary collisions suggest a new origin for the stony-iron meteorites called pallasites.
(html), (pdf)
12 May 2010 A Younger Age for the Oldest Martian Meteorite
New isotopic analyses show that famous Martian meteorite ALH 84001 formed 4.09 billion years ago, not 4.50 billion years ago as originally reported.
(html), (pdf)
30 April 2010 Asteroid, Meteor, Meteorite
Detected in space less than a day before hitting Earth, the Almahata Sitta meteorite from asteroid 2008 TC3 gives clues to the complex evolution of small asteroids.
(html), (pdf)
31 Mar 2010 Dynamics and Chemistry of Planet Construction
Planetary compositions allow us to test computer models of planet formation.
(html), (pdf)
17 Feb 2010 How Young is the Lunar Crater Giordano Bruno?
High-resolution images are used to determine how recently this crater formed, a mere 832 years ago or over a million years ago.
(html), (pdf)
21 Jan 2010 A Complication in Determining the Precise Age of the Solar System
The presence of short-lived isotope Curium-247 in the early Solar System complicates the job of dating the earliest events in the solar nebula.
(html), (pdf)
5 Jan 2010 Violent Adolescent Planet Caught Infrared Handed
Infrared telescopic observations may have observed dust from an impact between protoplanets in the disk surrounding young star HD172555.
(html), (pdf)
13 NOV 09 An Even More Precise View of Aluminum-26 in the Solar Nebula
New, precise analyses of the short-lived isotope aluminum-26 indicate it was distributed uniformly throughout the early solar system, an important clue to its origin.
(html), (pdf)
26 OCT 09 Kaidun--A Meteorite with Everything but the Kitchen Sink
This unique breccia is called a single-stone meteorite collection.
(html), (pdf)
18 SEPT 09 The Growing Diversity of Lunar Basalts
A lunar basaltic meteorite adds complexity to the already complicated story of mare basalt volcanism on the Moon.
(html), (pdf)
10 AUG 09 Space Weathering Agent: Solar Wind
Bombardment of helium ions on olivine in the laboratory simulates space weathering of asteroids and other airless bodies.
(html), (pdf)
25 JUNE 09 The Complicated Geologic History of Asteroid 4 Vesta
Meteorites from asteroid 4 Vesta show that it contains patches of granite-like rock.
(html), (pdf)
8 MAY 09 Mars Crust: Made of Basalt
Chemical analyses of rocks on the Martian surface indicate that the Martian crust was built of basalt lava flows not much different from those on Earth.
(html), (pdf)
25 MAR 09 Time to Solidify an Ocean of Magma
A small mineral grain places limits on how long it took the lunar magma ocean to solidify.
(html), (pdf)
19 FEB 09 More Evidence for Multiple Meteorite Magmas
Cosmochemists show that a pair of meteorites formed in an asteroid that erupted a newly-recognized type of asteroidal magma.
(html), (pdf)
27 JAN 09 The Crazy Mixed-Up Lunar Crust
The horizontal and vertical distribution of well-mixed basin ejecta has lunar-wide geochemical ramifications.
(html), (pdf)
14 DEC 08 Wee Rocky Droplets in Comet Dust
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.
(html), (pdf)
20 NOV 08 Tiny Molten Droplets, Dusty Clouds, and Planet Formation
Roughly constant sodium concentration during chondrule crystallization suggests that these molten droplets formed in regions of the solar nebula that were enriched in rocky dust.
(html), (pdf)
22 SEPT 08 The Bone-Dry Moon Might be Damp
Cosmochemists have written in stone that the Moon is almost totally devoid of water, but new analyses of volcanic glasses suggest that they need to do some editing.
(html), (pdf)
8 JULY 08 Heating, Cooling, and Cratering: One Asteroid's Complicated Story
Cooling rate data indicate that the H-chondrite parent asteroid was deeply cratered as it cooled slowly.
(html), (pdf)
30 MAY 08 Meteorites Found on Mars
No surprise that there are meteorites on other planets. Now that we've seen them on Mars, what do we know about them and what does their geochemistry tell us about the environment where they landed?
(html), (pdf)
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.
(html), (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.
(html), (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.
(html), (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.
(html), (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.
(html), (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.
(html), (pdf)
6 JULY 07 The Sun's Crowded Delivery Room
Isotopes in meteorites suggest that the Sun formed in a dense cluster of stars.
(html), (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. (html), (pdf)
18 APRIL 07 When Worlds Really Did Collide
Cosmochemical studies and dynamical models of protoplanetary collisions suggest a new origin for iron meteorites.
(html), (pdf)



In April, 2007 we began creating slides to accompany PSRD articles in response to requests from our readers. Do you have other good ideas to share with us? We invite you to use our comments page. Thank you.
home

[ About PSRD | Archive | CosmoSparks | Search | Subscribe ]

[ Glossary | General Resources | Comments | Top of page ]

http://www.psrd.hawaii.edu
psrd@higp.hawaii.edu