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Cathodoluminescence image of a 400-μm zircon and the 3-D map made by atom-probe tomography of a group of ~10-nm clusters of radiogenic atoms of 207Pb (yellow) and 206Pb (green) from the core of this crystal. Credit: John Valley, University of Wisconsin.
New Probe Gives Closer Look at Oldest Terrestrial MaterialAug. 18, 2015
NASA Postdoctoral Program (http://nasa.orau.org/postdoc/)
2015 NASA Astrobiology Postdoctoral Program Fellows AnnouncedAug. 17, 2015
This series of images of Comet 67P/Churyumov–Gerasimenko was captured by Rosetta’s OSIRIS narrow-angle camera on 12 August 2015, just a few hours before the comet reached the closest point to the Sun along its 6.5-year orbit, or perihelion.
Rosetta’s Big Day in the SunAug. 12, 2015
Artist’s impression of Roche lobe overflow in a planet. Credit: NASA/GSFC/Frank Reddy
Mini-Neptunes Might Host Life Under Right ConditionsAug. 12, 2015
Georgia Tech graduate student Sheng-Sheng Yu holds a sample that has been subjected to repeated cycles of wet-dry conditions. From amino acids and hydroxy acids, the process results in a mixture of polyesters and peptides containing as many as 14 units. C
Origins of Life in a Drying PuddleAug. 10, 2015
If starlight passing through a planetary atmosphere is blocked by clouds or haze, the resulting spectrum is flat and featureless, and no molecules or potential biomarkers are visible. Credit: Kempton, E.M.R., 2014, Nature, 513, 493. Used with permission
New Method Finds Best Candidates for Telescope TimeAug. 5, 2015
Operation IceBridge project scientist Michael Studinger took the photo of Taylor Valley,, one of the Dry Valleys of Antarctica where snow and ice are rare. Credit: NASA
Antarctic Offers Insights Into Life on MarsAug. 3, 2015
A picture of the aluminum plate with a chemical deposit on it. Credits: Karen Smith/NASA Goddard
NASA Researchers Find "Frozen" Recipe for Extraterrestrial VitaminAug. 2, 2015
Stalked barnacles from the vent fields at the Kawio Barat volcano, Western Pacific. Credit: NOAA Okeanos Explorer Program, INDEX-SATAL 2010
Barnacles Explain Life at the ExtremeJuly 29, 2015
Air showers ensuing from very-high-energy cosmic rays can enter Earth’s atmosphere from multiple directions. Credit: Simon Swordy/NASA
Solar Events Unlikely Triggers for Birth Defects on EarthJuly 27, 2015
This artist's concept compares Earth (left) to the new planet, called Kepler-452b, which is about 60 percent larger in diameter. Credits: NASA/JPL-Caltech/T. Pyle
NASA’s Kepler Mission Discovers Bigger, Older Cousin to EarthJuly 22, 2015
Rocks at Soudan Underground Mine State Park, Minnesota, show banding caused by layers of different minerals in a sample 2.7 billion years old. Credit: University of Wisconsin-Madison, http://news.wisc.edu/23863
A Biological Source of Iron in BIFsJuly 22, 2015
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