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A white hole is a theoretical solution to Einstein's field equations - a region which cannot be entered at all from the outside. In a sense, therefore, they are the time-reversed opposites of black holes. The theory suggests that a black hole is connected to a white hole via a tunnel called an Einstein-Rosen bridge (wormhole). Matter falls into the black hole and is expelled via the white one. Some theorists even argue that the Big Bang itself is a white hole, gushing out matter and creating a new universe while, on the other end, invisible and unreachable, is a black hole in a totally different universe.

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White Holes review: Extreme physics from Carlo Rovelli

We all know about black holes – we've even seen a picture of one. But white holes? In his latest book, theoretical physicist Carlo Rovelli weaves a poetic spell to persuade us that these mysterious entities are real

Culture

FRANCE - CIRCA 2002: Eve, 1896, by Lucien Levy-Dhurmer (1865-1896), pastel and gouache, 49x46 cm. (Photo by DeAgostini/Getty Images); . (Photo by DeAgostini/Getty Images)

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Eve review: Why women's bodies belong at the heart of human evolution

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Life on the edge by Amit Eshel, Israel Winner, Animals in their Environment Amit Eshel witnesses a dramatic cliffside clash between two Nubian ibex. After hiking to a vantage point on the clifftop, Amit slowly crept closer, using a wide-angle lens to set the action of two clashing Nubian ibex against the dramatic backdrop. The battle lasted for about 15 minutes before one male surrendered, and the pair parted without serious injury. In the run-up to the mating season, part of the males? coat darkens, and their neck muscles thicken. Rivals will raise up on their hind legs and ram their heads together. Their horns sometimes break as they collide. Location: Zin Desert, Israel Technical details: Canon EOS R5 + 24?70mm f2.8 lens at 45mm; 1/800 at f8; ISO 500

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New ��˾þ� recommends Wildlife Photographer of the Year and Opticks

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Image of the Moon captured by the Galileo spacecraft

Space

The moon is 40 million years older than we thought it was

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Two beguiling books show how mathematics is revolutionising our lives

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Two beguiling books show how mathematics is revolutionising our lives

Culture

2G6HE5R ANNIE JUMP CANNON (1863-1941) American astronomer and suffragist. about 1920

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Her Space, Her Time review: Trailblazing women astronomers

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2KJXNKB Leipzig, Germany. 25th Nov, 2022. Participants of a demonstration of the trade union Verdi walk with flags and carry a banner with the inscription

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Blood in the Machine review: Going back to the Luddites

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Close-up Happy Asian girl influencer wear headphone with guitar record podcast onair online live streaming talk follower comment and audience on phone at home studio. Female podcaster, Audio podcast.

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Extremely Online review: A vital look at the creator economy

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HNCH05 January 1, 1984 - ......Nineteen Eighty-four - 007..Film and Television. (Credit Image: ? Moviestore/Entertainment Pictures via ZUMA Press)

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Julia review: A brilliant, devastating sequel to Nineteen Eighty-Four

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Author Sy Montgomery with illustrator Matt Patterson

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Of Time and Turtles review: What can we learn from turtles?

Turtles have existed for around 250 million years. Sy Montgomery's new book shows us that these ancient reptiles have much to teach us about the nature of time

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Technology

Going Infinite review: Who is Sam Bankman-Fried?

Culture

Space

Slicing the moon in half would be disastrous for Earth – but beautiful

News

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Your Face Belongs to Us review: What is happening to public privacy?

Culture

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The Beast review: Is AI the beast in a powerful tale about emotions?

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