快猫短视频

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Image of the broken fragments surrounding Fragment B of Comet 73P/Schwassmann-Wachmann 3 observed with FORS1 on ESO's VLT in four filters (B, V, R, and I). As the telescope was tracking the comet, the stars appear as coloured trails, indicating the order in which the comet was observed in the different filters. North is up and East is to the left.

Space

Watch out for comet SW3, which might cause a meteor shower in late May

Here's hoping that a meteor shower predicted by astronomers for almost a century will be seen this month, says Abigail Beall

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2AD2YRB Pile of pink pills and around a white one. Medication, self-treatment or placebo concept: one tablet is different from the lot of others

What is it that provides the healing effect of a placebo treatment?

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F3EPBC Birds, Black Chinned Hummingbird sucking nector from Anise Sage flower, Idaho, USA

Do birds ever get out of breath?

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What is the weird mussel-like thing found in a mine?

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This week鈥檚 new questions

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Up-to-the-minute advice on the benefits of testicle tanning

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Tom Gauld stared into the abyss, and now they meet for regular chats

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Twisteddoodles: I’m you, but from a different dimension

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FEATURE CROP

Humans

A city of 10 billion: Speculative image paints a vision of the future

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T5R79P super green moon back silhouette Antenna night red cloud on sky, Elements of this image furnished by NASA

If the moon changed to green cheese, what would be the consequences?

If the moon鈥檚 rock was substituted for cheese, this would result in everying from the largest fondue in the universe to a tipping of Earth鈥檚 axis, say our readers

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How did prehistoric people cut their toenails?

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This week鈥檚 new questions

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Humans

How to make your own yogurt

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Humans

Evidence finally collated of toads mating with things they shouldn鈥檛

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