Tuesday 25 July 2017

Large, distant comets more common than previously thought

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There are about seven times more long-period comets measuring at least 1 kilometer across than previously predicted, suggests new research. The researchers also found that long-period comets are, on average, nearly twice as large as 'Jupiter family' comets, whose orbits are shaped by Jupiter's gravity and have periods of less than 20 years.
via Science Daily
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Cosmologists produce new maps of dark matter dynamics

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New maps of dark matter dynamics in the Universe have been produced by a team of international cosmologists, outlines a new report.
via Science Daily
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NASA mission surfs through waves in space to understand space weather

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NASA's Van Allen Probes have observed a new population of space sound waves, called plasmaspheric hiss, which are important in removing high-energy particles from around Earth that can damage satellites.
via Science Daily
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Large single-crystal graphene is possible, say scientists

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The target of large, cheap and quick graphene synthesis has been achieved, report researchers in a new article.
via Science Daily

Chemical route towards electronic devices in graphene

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Essential electronic components, such as diodes and tunnel barriers, can be incorporated in single graphene wires (nanoribbons) with atomic precision. The goal is to create graphene-based electronic devices with extremely fast operational speeds.
via Science Daily

From battery waste to electrochemical sensor

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Multiplex detection of antioxidants, food additives and preservatives in food samples is possible using our newly developed graphite-based nanocomposite electrochemical sensor from used alkaline battery. The chemical sensor not only leads to shorter analysis time but also is a greener chemistry innovation.
via Science Daily

Barred Spiral Galaxy NGC 1672 Astronomy Picture Fleece Blanket

Barred Spiral Galaxy NGC 1672 Astronomy Picture Fleece Blanket
Galaxies, Stars and Nebulae series: This NASA Hubble Space Telescope view of the nearby barred spiral galaxy NGC 1672 unveils details in the galaxy's star-forming clouds and…


Int-Ball Drone Activated on the Space Station

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What if you were followed around by a cute floating ball that kept taking your picture? Then you might be an astronaut on today's International Space Station (ISS). Designed by the Japan Aerospace Exploration Agency (JAXA), the JEM Internal Ball Camera -- informally "Int-Ball" -- is a bit larger than a softball, can float and maneuver by itself but also be controlled remotely, can take high resolution images and videos, and is not related to Hello Kitty. Int-Ball was delivered to the ISS in early June and is designed to allow ground-control to increase the monitoring of ISS equipment and activities while decreasing time demands on human astronauts. Int-Ball moves by turning on small internal fans and sees with a camera located between its two dark eyes.

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Saturn surprises

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New views from Cassini’s weekly dives between Saturn and its rings
via ESA Space Science
http://www.esa.int/Our_Activities/Space_Science/Highlights/Saturn_surprises