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Sun


— Environment

Kirigami-inspired solar cells twist to track the sun

One of the challenges facing designers of traditional flat solar panels is the fact that the sun doesn't conveniently stay in one place. This means that in order for a panel to receive as much sunlight as possible, it has to pan with the sun as it moves across the sky. While there are motorized assemblies designed to do just that, they add complexity, weight and expense to photovoltaic systems. Now, however, University of Michigan scientists have developed a simpler alternative – and it's based on the ancient Japanese cut-paper art of kirigami.

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— Space

Astronomers discover Jupiter's twin orbiting a distant Sun-like star

A team of international astronomers has discovered a gas giant orbiting a distant star with characteristics remarkably similar to those of our own Jovian planet, Jupiter. The significance of the discovery is that the gas giant was found to orbit roughly the same distance from its host star HIP 11915, as Jupiter does from the Sun. This positioning may have profound implications for creating conditions favorable to the development of a habitable Earth-like planet in HIP 11915's inner solar system.

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— Space

UK consortium proposes mission to provide five-day warning of solar storms

Solar storms – or Coronal mass ejections (CMEs) – are caused by the sudden release of built-up magnetic stress in the Sun's atmosphere. On Earth, we see the results of small versions of these when plasma streaming from the sun strikes our upper atmosphere and creates the Northern and Southern Lights (the Aurora Borealis and the Aurora Australis). Sometimes, however, these ruptures can be inordinately large and have the potential to wreak havoc on orbiting satellites, radio networks, and national power grids. In an effort to be prepared well in advance of such events, a UK consortium has proposed a satellite system that can provide as much as five days warning of potentially damaging CMEs. Read More
— Health and Wellbeing

Shadow Wi-Fi fights skin cancer by keeping sun worshippers in the dark

Awareness campaigns, sunscreen and mending the hole in the ozone layer have all played a part in the battle against skin cancer. But the beachgoers of Peru now have another form of relief from the sun's harmful UV rays. Aimed at drawing in roasting folk who could do with some respite, ad agency Happiness Anywhere has installed towering sun shades and a free Wi-Fi network that only functions when the users are in the shadows.

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— Space

Stellar viewing: The solar eclipse in pictures

Friday morning bore witness to a stunning solar eclipse, as our Moon traversed the face of our parent star, blocking its light in a beautiful example of the intricate orbits negotiated by the planets and moons that make up our solar system. For those able to secure a pair of protective glasses and be charmed enough to gaze through cloud-free skies, the sight was a spectacular one – a rare meeting of two celestial bodies that have accompanied each of us through every day and night of our lives. Read More
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