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Many things in the universe spin, so could the universe itself be spinning? And why can I only remember words that I know how to pronounce?

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Galaxy - Elements of this Image Furnished by NASA; Shutterstock ID 1716207277; purchase_order: -; job: -; client: -; other: -

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Space debris problem highlighted in new series of photographs

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NEW CLOUDS ABOVE US The modern world relies on satellites for its communications and commerce. While mostly invisible to us as we go about out daily lives, our entire modern way of living ? both socially and professionally ? is intimately linked with the orbital space around the Earth. How we treat this extraterrestrial environment will determine how much we can rely on it in the future. ?In this view of Greenwich, London, you?ve got examples of what?s in space. I photographed about 300 artefacts ranging from satellites to rocket bodies, satellite parts, solar panels, all the way down to the screws and a glove to show what?s up there. The photography was done over a one year period, across North America, Europe and the UK. I wanted to show this from a human perspective ? from the ground looking up. I chose Greenwich because of its history of astronomy and because from there you can see the financial district of London to highlight the modern world?s connection to the satellites that circle Earth.? Max Alexander

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How was rhubarb found to be edible when it tastes bad raw? (Part 2)

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Farmer harvesting organic rhubarb from her kitchen garden. Rhubarb can be harvested many times through the year. Photographed at an ???off grid??? home on the island of Moen in Denmark. Colour, horizontal format with some copy space.
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Puzzle #220: How many countries took part in the AI song contest?

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Tom Gauld: On Fridays, the whole research team works from home

Tom Gauld: On Fridays, the whole research team works from home

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Twisteddoodles on exhibition stands at science conferences

Twisteddoodles on exhibition stands at science conferences

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Hilma af Klint The Ten Largest, Group IV, No. 9, Old Age, 1907 Courtesy of The Hilma af Klint Foundation

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Famed abstract artists capture nature as you’ve never seen it before

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2GYKRJN The waxing crescent Moon near the stars Castor and Pollux in Gemini, with Mars below, as the last of the winter stars set into the western twilight on

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How to spot Mars travelling through Gemini this week

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Father and 2 little boys are walking dog in winter forest

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If I go barefoot in snow my feet soon hurt, yet my dog seems OK. Why?

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If octopuses evolved to live on land, would they develop technology?

Octopuses already use technology, say our readers, but perhaps their short life cycle holds them back despite their impressive intelligence

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If octopuses evolved to live on land, would they develop technology?

Puzzle #219: Can you work out where the second red queen will be?

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Study finds it is 'barely possible to identify a beautiful scrotum'

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What’s the most efficient way to load passengers into planes? (part 2)

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This week’s new questions

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