91色情片

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Car shape keyring and remote control key in vehicle interior; Shutterstock ID 519107755; purchase_order: -; job: -; client: -; other: -

What are the chances of my remote car key fob unlocking another car?

Very low, say our readers 鈥� but back in the day, this wasn鈥檛 a particularly rare occurrence

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Close-up of delighted senior man twirling moustache and smoothing his grey beard. Man taking care of his bushy beard and mustache ; Shutterstock ID 559674487; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

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Tom Gauld on the journey to a magma chamber

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Twisteddoodles on birdwatching

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Barry Webb (#445691)

Life

Otherworldly beauty of fungi on show in photo competition

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Northern Milky Way. Optical image of the Milky Way running through the northern constellations Cassiopeia, Perseus and Cepheus. North is at top. The Milky Way is the band of light crossing the sky formed from the millions of stars in the plane of our galaxy. Cassiopeia, the queen, is formed from the W of bright stars at centre right. Cepheus, the king, is at upper right. At lower right is the constellation Andromeda, the princess. At lower left is Perseus. These constellations represent a story from ancient Greek mythology in which Perseus rescued Andromeda, the daughter of Cepheus and Cassiopeia, from a monster.

Space

How to spot the constellations Perseus and Auriga

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GUILIN, CHINA - OCTOBER 16: Juri Hollmann of Germany and Movistar Team leads the peloton during the 4th Gree-Tour of Guangxi 2023, Stage 5 a 209.6km stage from Liuzhou to Guilin / #UCIWT / on October 16, 2023 in Guilin, China. (Photo by Tim de Waele/Getty Images)

Does a cyclist with a rider behind use more energy than a solo rider?

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Earth core structure. Elements of this image furnished by NASA; Shutterstock ID 371019560; purchase_order: -; job: -; client: -; other: -

Why does our planet have an iron core?

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2JP8KPY Very tight parking in Italy with a small dented family car bumper to bumper squashed in next to two cars in a parking bay with only inches to move.

What is the shortest space a parked car can get out of? Part 3

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HFRCEK Knife slicing wholegrain bread

This week鈥檚 new questions

What is the best way, and the best sort of knife to use, to minimise the amount of crumbs when slicing bread, particularly wholemeal? And why does being tickled make us laugh, when it is just a feeling on our skin?

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Do naked mole rats hold the secret to a youthful appearance? Perhaps

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Tom Gauld on the particle collider experience

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Twisteddoodles on theorising the weight of planets

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91色情片

Antique clocks give a window into scientific innovation of times past

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