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Black holes

A black hole in space

Space

鈥業slands鈥� poking out of black holes may solve the information paradox

Measuring 鈥渆ntanglement islands鈥� that contain copies of information that black holes have lost could help us find an answer to Stephen Hawking鈥檚 black hole paradox

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Space

Strange way black holes lose energy could help solve cosmic puzzle

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location of distant black hole

Space

Astronomers have found the most distant black hole ever confirmed

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An illustration of a black hole created after a supernova

Space

Strange supernova blasts hint we have glimpsed a black hole鈥檚 birth

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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.

Comment

White Holes review: Extreme physics from Carlo Rovelli

Culture

Space

Seven wonders of the Milky Way: An astronomer鈥檚 guide to the galaxy

Features

Space

Why trying to photograph a black hole was a massive gamble

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Space

Dark stars: Have we finally found a weird sun powered by dark matter?

Features

Space

The earliest black holes seen by JWST appear to be unusually massive

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Artists impression of a black hole destroying a nearby star

Space

Never-before-seen space explosion is incredibly bright but fades fast

An explosion that was billions of times brighter than the sun but faded within a month may have occurred when a rare medium-sized black hole ate a star

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Space

JWST may have seen black holes suppressing the creation of new stars

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Space

The gravitational waves that could shed light on the cosmic dark age

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Space

Black holes may be hurtling around at 10 per cent the speed of light

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Space

Could a gravitational wave rip apart an entire planet?

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