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Space & Cosmos
Ion engines could take us to the Sun’s gravitational lens within 13 years, paper suggests
ion thruster. Credit: NASA Sending objects to other stars is still science fiction. But with some specific missions, you might be able to get at least halfway there. These “interstellar precursor missions” involve trips to the Sun’s gravitational lensing point, which is 550 astronomical units from the Sun. This is further away than any previous man-made object, including Voyager. Getting…
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Chemistry
Developing plasma-coated paper as a plastic alternative for the packaging industry
A plasma source is introduced near the surface of the paper. This image shows the direct interaction between plasma and paper. Credit: Fraunhofer Gesellschaft In recent years, the amount of plastic waste that is harmful to the environment has been increasing in Germany. Packaging generates particularly large amounts of waste. Plant-based coatings for paper packaging could be a sustainable alternative…
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