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Planet Finder Validates Its First Habitable-Zone Exoplanet, a Mini Neptune


Astronomers have validated their first exoplanet with the Habitable Zone Planet Finder instrument on the Hobby-Eberly Telescope, one of the world’s largest telescopes, located at The University of Texas at Austin’s McDonald Observatory.

 

About twice the size of Earth and possibly 12 times as massive, the planet could be similar to Neptune, but in miniature. Called G 9-40b, it orbits a small star called a red dwarf about 100 light-years from Earth. It completes a full orbit every six Earth days.

 

 

Sourced through Scoop.it from: news.utexas.edu

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Boom! Scientists spot the biggest explosion in the history of the universe | Space


Boom! Scientists spot the biggest known explosion in the history of the universe

Sourced through Scoop.it from: www.space.com

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Researchers develop a silicon anode that can increase battery capacity four-fold in comparison to graphite and enables rapid charging


Dr. Hun-Gi Jung and his research team at the Center for Energy Storage Research of the Korea Institute of Science and Technology (KIST, President Lee Byung Gwon) have announced the development of silicon anode materials that can increase battery capacity four-fold in comparison to graphite anode materials and enable rapid charging to more than 80% capacity in only five minutes. When applied to batteries for electric vehicles, the new materials are expected to more than double their driving range.

 

The batteries currently installed in mass-produced electric vehicles use graphite anode materials, but their low capacity contributes to electric vehicles’ having a shorter driving range than vehicles with internal combustion engines. Consequently, silicon, with an energy storage capacity 10-times greater than graphite, has drawn attention as a next-generation anode material for the development of long-range electric vehicles. However, silicon materials have not yet been commercialized because their volume expands rapidly and storage capacity decreases significantly during charge and discharge cycles, which limits commercialization. A number of methods have been suggested for enhancing the stability of silicon as an anode material, but the cost and complexity of these methods have prevented silicon from replacing graphite.

 

 

Sourced through Scoop.it from: eurekalert.org

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