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Recent Articles
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Topic: DeuteriumWritten by Christine Pulliam
NASA’s James Webb Space Telescope will study Mars to learn more about the planet’s transition from wet to dry, and what that means about its past and present habitability. ![]() Hydrogen atoms escape from the Mars upper atmosphere, while water containing heavy hydrogen (deuterium) remains trapped on the planet. The escape of hydrogen helped to turn Mars from a wet planet 4.5 billion years ago into a dry world today. (NASA) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Mars Curiosity rover detects organic chemical in atmosphere and organic molecules in rock powder on MarsWritten by Guy Webster
“This temporary increase in methane — sharply up and then back down — tells us there must be some relatively localized source,” said Sushil Atreya of the University of Michigan, Ann Arbor, a member of the Curiosity rover science team. “There are many possible sources, biological or non-biological, such as interaction of water and rock.” ![]() This illustration portrays possible ways methane might be added to Mars’ atmosphere (sources) and removed from the atmosphere (sinks). (NASA/JPL-Caltech/SAM-GSFC/Univ. of Michigan) «Read the rest of this article» Sections: Technology | No Comments
NASA reports data from Rosetta Orbiter show origin of Earth’s water not from comets like Comet 67P/Churyumov-GerasimenkoWritten by DC Agle
Data from the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) instrument aboard the European Space Agency’s Rosetta spacecraft indicate that terrestrial water did not come from comets like 67P/Churyumov-Gerasimenko. The findings were published today in the journal Science. ![]() NASA reports data from Rosetta Orbiter show origin of Earth’s water not from comets like Comet 67P/Churyumov-Gerasimenko «Read the rest of this article» Sections: Technology | No Comments
NASA Astronomers discover “Super Jupiter” planet orbiting Massive StarWritten by Francis Reddy
Designated Kappa Andromedae b (Kappa And b, for short), the new object has a mass about 12.8 times greater than Jupiter’s. This places it teetering on the dividing line that separates the most massive planets from the lowest-mass brown dwarfs. ![]() The “super-Jupiter” Kappa Andromedae b, shown here in an artist’s rendering, circles its star at nearly twice the distance that Neptune orbits the sun. With a mass about 13 times Jupiter’s, the object glows with a reddish color. (Credit: NASA’s Goddard Space Flight Center/S. Wiessinger) «Read the rest of this article» Sections: Technology | No Comments
New NASA Missions to Investigate How Mars Turned HostileWritten by Bill Steigerwald
The Martian surface is incredibly hostile for life. The Red Planet’s thin atmosphere does little to shield the ground against radiation from the Sun and space. Harsh chemicals, like hydrogen peroxide, permeate the soil. Liquid water, a necessity for life, can’t exist for very long here—any that does not quickly evaporate in the diffuse air will soon freeze out in subzero temperatures common over much of the planet. ![]() This artist's concept shows the MAVEN spacecraft orbiting Mars. (Credit: NASA/Goddard Space Flight Center) «Read the rest of this article» Sections: News | No Comments
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