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Illustration of a wormhole's opening

Space

Quantum weirdness could allow a person-sized wormhole to last forever

We were unsure if wormholes could exist long enough to allow a person through. Now calculations indicate they are extremely rare, but could last the age of the universe

News

Born in the big bang: How ancient black holes could save cosmology

Space

Born in the big bang: How ancient black holes could save cosmology

Features

Illustration of a supermassive black hole

Space

Some planets may orbit a supermassive black hole instead of a star

News

Impression of a black hole merger

Space

Black hole that 'rings' like a bell shows Einstein was right

News

There is a pair of weird, gigantic bubbles at the centre of our galaxy

Space

There is a pair of weird, gigantic bubbles at the centre of our galaxy

News

Einstein’s black holes are not the black holes we see in reality

Space

Einstein’s black holes are not the black holes we see in reality

Comment

Two black holes

Space

Puzzling signals seen by LIGO may be gravitational wave split in two

News

Artist's impression of a neutron star and black hole

Physics

LIGO may have seen its first black hole and neutron star collision

News

Milky Way's black hole has got 75 times brighter and we don't know why

Space

Milky Way's black hole has got 75 times brighter and we don't know why

News

Telescope with milky way in the night sky above

Space

We spotted a star moving so fast it will enter intergalactic space

We spotted a star zooming through the Milky Way at 1700 kilometres per second - so fast that it will soon leave our galaxy behind and enter intergalactic space

News

Space

Star hurtling around a giant black hole proves Einstein right - again

News

Space

Our galaxy's central black hole is oddly quiet – now we may know why

News

Definition

General relativity

Definition

Second law of thermodynamics