51��

Skip to content

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.

Comment

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

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

Comment

51�� recommends Wildlife Photographer of the Year and Opticks

Culture

Two beguiling books show how mathematics is revolutionising our lives

Comment

Two beguiling books show how mathematics is revolutionising our lives

Culture

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

Comment

Her Space, Her Time review: Trailblazing women astronomers

Culture

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

Comment

Blood in the Machine review: Going back to the Luddites

Culture

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

Comment

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

Culture

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.

Comment

Extremely Online review: A vital look at the creator economy

Culture

Author Sy Montgomery with illustrator Matt Patterson

Comment

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

Culture

Sam Bankman-Fried

Technology

Going Infinite review: Who is Sam Bankman-Fried?

Culture

CARDIFF, WALES - JUNE 20: Police facial recognition cameras in operation on Westgate Street ahead of a Harry Styles concert at the Principality Stadium on June 20, 2023 in Cardiff, Wales. Members of the European Parliament recently backed an effective ban on live face recognition cameras in public. A live face recognition camera works by comparing faces with a

Comment

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

A scary future looms if we fail to protect the freedom of being anonymous in public places, says Kashmir Hill's new book

Culture

Comment

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

Culture

Comment

Still Up review: Insomnia rom com is worth staying up for

Culture

Comment

The Deadly Rise of Anti-science review: The personal cost of research

Culture

Comment

The Naked Neanderthal review: Looking for the real Neanderthals

Culture