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Recent Articles
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Topic: Iron
A new study published today in the Planetary Science Journal shows that the TRAPPIST-1 planets have remarkably similar densities. That could mean they all contain about the same ratio of materials thought to compose most rocky planets, like iron, oxygen, magnesium, and silicon. ![]() Measuring the mass and diameter of a planet reveals its density, which can give scientists clues about its composition. Scientists now know the density of the seven TRAPPIST-1 planets with a higher precision than any other planets in the universe, other than those in our own solar system. (NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Lunar Reconnaissance Orbiter (LRO) spacecraft radar shows the Moon may be Richer in Metals than thought
Team members of the Miniature Radio Frequency (Mini-RF) instrument on NASA’s Lunar Reconnaissance Orbiter (LRO) spacecraft found new evidence that the Moon’s subsurface might be richer in metals, like iron and titanium, than researchers thought. That finding, published July 1st in Earth and Planetary Science Letters, could aid in drawing a clearer connection between Earth and the Moon. ![]() This image based on data from NASA’s Lunar Reconnaissance Orbiter spacecraft shows the face of the Moon we see from Earth. The more we learn about our nearest neighbor, the more we begin to understand the Moon as a dynamic place with useful resources that could one day even support human presence. (NASA / GSFC / Arizona State University) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Hubble Space Telescope sees Comet-Like Object ripped apart in Atmosphere of White DwarfWritten by Ann Jenkins / Ray Villard
The object has a chemical composition similar to Halley’s Comet, but it is 100,000 times more massive and has a much higher amount of water. It is also rich in the elements essential for life, including nitrogen, carbon, oxygen, and sulfur. ![]() This artist’s concept shows a massive, comet-like object falling toward a white dwarf. New Hubble Space Telescope findings are evidence for a belt of comet-like bodies orbiting the white dwarf, similar to our solar system’s Kuiper Belt. The findings also suggest the presence of one or more unseen surviving planets around the white dwarf, which may have perturbed the belt to hurl icy objects into the burned-out star. (NASA, ESA, and Z. Levy (STScI)) «Read the rest of this article» Sections: Technology | No Comments
NASA takes a look back at Supernova 1987aWritten by Rob Gutro
Since that first sighting, SN 1987A has continued to fascinate astronomers with its spectacular light show. Located in the nearby Large Magellanic Cloud, it is the nearest supernova explosion observed in hundreds of years and the best opportunity yet for astronomers to study the phases before, during, and after the death of a star. ![]() This Hubble Space Telescope image shows Supernova 1987A within the Large Magellanic Cloud, a neighboring galaxy to our Milky Way. (NASA, ESA, R. Kirshner (Harvard-Smithsonian Center for Astrophysics and Gordon and Betty Moore Foundation), and M. Mutchler and R. Avila (STScI)) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Journey to Mars builds ground work for missions beyond our Solar SystemNASA Headquarters
Closer to home, we’re working on techniques to help us cross greater distances. Astronauts feast on romaine lettuce grown aboard the International Space Station, perhaps a preview of future banquets en route to Mars, or to deep space. ![]() A selfie taken by Curiosity the Mars rover in the Murray Buttes area. NASA’s Journey to Mars, a plan aimed at building on robotic missions to send humans to the red planet, could be helping lay the groundwork. (NASA/JPL-Caltech/MSSS) «Read the rest of this article» Sections: Technology | No Comments
American Heart Association reports FDA Expands Health Claim for More Fruits, VegetablesAmerican Heart Association Can Now Certify These Foods as Heart-Healthy
The ruling was in response to a petition submitted by the Association in September 2012. «Read the rest of this article» Sections: News | No Comments
NASA’s Dawn spacecraft reveals new areas where Ice may hide on CeresWritten by Elizabeth Landau
But newly published studies from Dawn scientists show two distinct lines of evidence for ice at or near the surface of the dwarf planet. Researchers are presenting these findings at the 2016 American Geophysical Union meeting in San Francisco. ![]() This graphic shows a theoretical path of a water molecule on Ceres. Some water molecules fall into cold, dark craters called “cold traps,” where very little of the ice turns into vapor, even over the course of a billion years. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA) «Read the rest of this article» Sections: Technology | No Comments
Tennessee Department of Agriculture says it’s time for Local Honey and Sorghum
Honey is often harvested twice per year, in spring and fall. Flavor is determined solely by the nectar source, giving some honeys stronger flavor than others. As a rule, the lighter the honey’s color the milder its flavor, but buying directly from the beekeeper is the best way to learn the characteristics of a particular honey. «Read the rest of this article» Sections: News | No Comments
NASA’s Kepler space telescope (K2) discovers Planet being ripped apart by White Dwarf StarWritten by Whitney Clavin
“We are for the first time witnessing a miniature “planet” ripped apart by intense gravity, being vaporized by starlight and raining rocky material onto its star,” said Andrew Vanderburg, graduate student at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, and lead author of the paper published in Nature. ![]() In this artist’s conception, a tiny rocky object vaporizes as it orbits a white dwarf star. Astronomers have detected the first planetary object transiting a white dwarf using data from the K2 mission. Slowly the object will disintegrate, leaving a dusting of metals on the surface of the star. (CfA/Mark A. Garlick) «Read the rest of this article» Sections: Technology | No Comments
Consumer Reports lays down the facts about GlutenCR survey finds 63% of Americans believe a gluten-free diet would improve physical or mental health—but cutting gluten isn’t always more nutritious or better for most people
The report points out that a gluten-free claim doesn’t mean the product is necessarily more nutritious, it may actually be less so; that consumers may increase their exposure to arsenic by going gluten-free, and a gluten-free diet might cause weight gain—not weight loss. And, most gluten-free foods cost more than their regular counterparts. «Read the rest of this article» Sections: News | No Comments
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