Monday 11 September 2017

Water-based lithium-ion batteries without explosive risks now a reality

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Researchers have developed for the first time a lithium-ion battery that uses a water-salt solution as its electrolyte and reaches the 4.0 volt mark desired for household electronics, such as laptop computers, without the fire and explosive risks associated with some commercially available non-aqueous lithium-ion batteries.
via Science Daily

Does the organic material of comets predate our solar system?

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The Rosetta space probe discovered a large amount of organic material in the nucleus of comet 'Chury.' Researchers now advance the theory that this matter has its origin in interstellar space and predates the birth of the solar system.
via Science Daily
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Ringed beauty

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One of Cassini’s last looks at Saturn and its main rings from a distance
via ESA Space Science
http://www.esa.int/spaceinimages/Images/2017/09/Saturn

Cassini Approaches Saturn

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What would it look like to approach Saturn in a spaceship? One doesn't have to just imagine -- the Cassini spacecraft did just this in 2004, recording thousands of images along the way, and hundreds of thousands more since entering orbit. Some of Cassini's early images have been digitally tweaked, cropped, and compiled into the featured inspiring video which is part of a larger developing IMAX movie project named Outside In. In the concluding sequence, Saturn looms increasingly large on approach as cloudy Titan swoops below. With Saturn whirling around in the background, Cassini is next depicted flying over Mimas, with large Herschel Crater clearly visible. Saturn's majestic rings then take over the show as Cassini crosses Saturn's thin ring plane. Dark shadows of the ring appear on Saturn itself. Finally, the enigmatic ice-geyser moon Enceladus appears in the distance and then is approached just as the video clip ends. The Cassini spacecraft itself, low on fuel, is scheduled to end on Friday when it will be directed to approach so close to Saturn that it falls in and melts.

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Goodbye kiss

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Space Science Image of the Week: As Cassini makes its last flyby of Titan today, setting it on course for Friday’s mission end, we recall Huygens’ descent to this mysterious moon
via ESA Space Science
http://www.esa.int/spaceinimages/Images/2017/09/Descent_to_Titan

Explosive birth of stars swells galactic cores

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Astronomers found that active star formation upswells galaxies, like yeast helps bread rise. Using three powerful telescopes on the ground and in orbit, they observed galaxies from 11 billion years ago and found explosive formation of stars in the cores of galaxies. This suggests that galaxies can change their own shape without interaction with other galaxies.
via Science Daily
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