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cosmology

General view of a star field

Space

Weird particle soup may have formed stars in the early universe

Pions are particles that usually decay very quickly. But right after the big bang, they could have made stars that last long enough for us to detect now

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A visualization of a supercomputer simulation of merging black holes sending out gravitational waves

Physics

Dark matter could be produced by twisted gravitational waves

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Shrinking black holes avoid paradox by oozing hidden information

Space

Shrinking black holes avoid paradox by oozing hidden information

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Galaxies

Space

Dancing galaxies may shake up our ideas of galaxy formation

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dwarf galaxy

Space

So long, suckers: Where have all the black holes gone?

Features

The bright Cepheid variable star at the center of the image, RS Puppis, rhythmically brightens and dims

Physics

The universe still seems to be expanding faster than it ought to

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Emission nebula Sharpless 2-106

Physics

The ugly, fractured reality of the cosmos deserves our attention

Comment

reading book

Space

The books and ideas that will shape the year ahead

Culture

Black hole

Space

Parallel universes could solve a big problem with black holes

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1845 telescope

Physics

Exploring the universe – and how we found our place in it

Enjoy the spectacular cosmos with this illustrated guide to astronomy, ranging from an iconic diagram by Copernicus to one of NASA's 2017 Jupiter photos

Culture

Space

Ancient black holes ruled out as source of all dark matter

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Physics

Dark energy is mutating, with grave consequences for the cosmos

Features

Space

The usual way of hunting dark matter may be all wrong

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Physics

We've found a bunch of dwarf galaxies we thought didn't exist

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