51动漫

Last Word

Supernova explosion in the center of galaxy "Elements of this image furnished by NASA "; Shutterstock ID 1838493049; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

What would we see, and how would Earth be affected, if Sirius, the brightest star in our night sky, were to go supernova? And why, when I first step into a hot shower, do I get a brief shiver down my back?

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close up the fly on the window, on the glass, the concept of sanitation, dangerous insects, insect repellent, copy space; Shutterstock ID 1168097506; purchase_order: -; job: -; client: -; other: -

Why can a fly enter my home easily, but not escape as easily?

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close up of young woman with closed eyes and glitter on face isolated on grey; Shutterstock ID 2207015511; purchase_order: -; job: -; client: -; other: -

Why do humans like sparkly things?

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Close up of an augmented reality (AR) sand table, an advanced technology to create a learning tool for students.; Shutterstock ID 1857112591; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

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HYMJ79 The famous prehistoric stone circle at Stonehenge on a bright spring day.

How did ancient Britons manage to mark the solstices with Stonehenge?

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Mandatory Credit: Photo by R Dirscherl/imageBROKER/Shutterstock (14053960e) Snorkeler and Humpback Whales (Megaptera novaeangliae), Silverbanks, Dominican Republic Various 23aibebcaa

Could we use machine learning to converse with whales and dolphins?

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Man opening door of retro refrigerator freezer.; Shutterstock ID 2275541755; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

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2F4D4YW Two American crows sitting on a bare branch communicating with each other.

How do crows develop such distinct and individual 鈥榲oices鈥�?

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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: -

Why does our hair go white while eyebrows stay their original colour?

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Blue and dark space landscape with planets and starry sky and mountains. Huge planet on the horizon volumetric lighting 3d rendered baackground.; Shutterstock ID 2208373835; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

Larger planets have more distant horizons, but lower mountains due to higher gravity, so will you see further on bigger or smaller planets? And other than humans, animals just eat what they find, as they find it - no cooking, no washing, Why aren鈥檛 they vomiting all the time?

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Why are so many spring flowers yellow?

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What would happen to Earth if the Milky Way hit another galaxy?

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This week鈥檚 new questions

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Why aren鈥檛 humans covered in hair like other primates are?

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