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In this series of articles PSRD highlights the essential tools and amazing technology used by talented scientists seeking to unravel how the solar system formed.This section of PSRD contains links to great information about meteorites, planetary science, and classroom activities.Search + site navigation links are available on the top and bottom of each page.

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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.

The latest orbital images and topographic data offer new insights to the geologic context of Apollo 17 impact melt breccias. PSRD-Impact Melt Breccias-Apollo176 RECENT HEADLINE ARTICLES. [ V I E W A L L ] » A Sample from an Ancient Sea of Impact Melt A lunar breccia from the Apollo 16 site contains a fragment formed in a sea of impact melt 4.2 billion years ago.

» Primordial Molecular Cloud Material in Metal-Rich Carbonaceous Chondrites 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.

New dates determined for aqueous alteration on chondritic parent bodies, based on a new mineral standard, have big implications on the timing and location of accretion.

Join the growing list of subscribers -- Sign up for our mailing list and you will receive an e-mail notice of each new headline article posted on PSRD.

In this series of reports PSRD gives quick views of big advances in cosmochemistry, with links to further details. This section of PSRD contains annotated slide sets that are associated with our headline articles.

» Remnants of Earth's Construction -- Tungsten isotopic data from modern flood basalts show that regions of Earth's mantle have remained chemically isolated since they formed during accretion of the planet. We hope you find the slides useful for your own talks and presentations.

» Primeval Water in the Earth Hydrogen isotopes in lavas derived from the deep mantle suggest the presence of a component inside the Earth that came directly from the primordial solar nebula.

» Age Rules Rules for determining the most reliable ages for Moon rocks shed light on what rocks formed when during construction of the ancient lunar highlands crust.

» Making and Differentiating Planets A detailed study forming Earth and differentiating it into core and mantle shows that it accreted heterogeneously and most water is added after 60% of the Earth had formed.

» Chondritic Asteroids–When Did Aqueous Alteration Happen?

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