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The secret of dark matter could be a particle the size of a planet

Physics

The secret of dark matter could be a particle the size of a planet

Physicist Asimina Arvanitaki thinks big: enormous particles and a gigantic, dark-matter beacon – and knows how we might find them

Features

The kilogram has been transformed as new definition takes hold

Physics

The kilogram has been transformed as new definition takes hold

Regulars

Axions may or may not exist - but we're not just making things up

Physics

Axions may or may not exist - but we're not just making things up

Comment

Kate Shaw

Physics

Physicist Kate Shaw on Higgs bosons and how reality is an illusion

Regulars

Quantum physics

Definition

Quantum physics

Schrödinger’s cat

Definition

Schrödinger’s cat

Uncertainty principle

Definition

Uncertainty principle

A sponge

Physics

Artificial sponges could pull uranium from seawater for nuclear power

News

Iranian president Hassan Rouhani at a nuclear power plant

Physics

It may become impossible to tell if Iran starts making a nuclear bomb

Analysis

HBO's Chernobyl drama highlights the human cost of nuclear catastrophe

Technology

HBO's Chernobyl drama highlights the human cost of nuclear catastrophe

An intense new HBO miniseries about the world's worst nuclear accident turns the Chernobyl Soviet scientists into unlikely heroes in its portrayal of a world superpower approaching meltdown

Culture

Life

Working hypothesis: From slow ramblers to asteroid Ryugu

News

Environment

Glaciers contain radioactive isotopes from nuclear tests and accidents

News

Physics

What would happen if you got sucked into a black hole?

Features

Technology

Don't miss: Kubrick's genius, Haida mythology and the power of emotion

Culture