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Two particles ready to collide to one another representing the weak nuclear force

Definition

Weak nuclear force

The weak nuclear force is the fundamental force responsible for radioactive beta decay.

Why the universe I invented is right – but still not the final answer

Space

Why the universe I invented is right – but still not the final answer

Features

Strong nuclear force

Definition

Strong nuclear force

Gravity

Definition

Gravity

The surprising benefits of contemplating the death of the universe

Physics

The surprising benefits of contemplating the death of the universe

Features

We have seen hints of a new fundamental force of nature

Physics

We have seen hints of a new fundamental force of nature

Features

A kettle boiling

Last Word

This week’s new questions

Regulars

Pondering the big question of consciousness is a welcome distraction

Physics

Pondering the big question of consciousness is a welcome distraction

Leader

What is life and how did it evolve? We're getting closer to the answer

Video

What is life and how did it evolve? We're getting closer to the answer

Video

Jess Wade: The magic of mirror molecules and incredible nanostructures

Video

Jess Wade: The magic of mirror molecules and incredible nanostructures

From wearable sensors to solar panels, we are developing new materials from the stuff of peacock feathers and butterfly wings. Physicist Jess Wade shows how.

Video

Video

What is dark energy, and could it destroy the universe?

Video

Physics

Neutrinos may explain why we don’t live in an antimatter universe

News

Space

We may have spotted a parallel universe going backwards in time

Features

Physics

How a new twist on quantum theory could solve its biggest mystery

Features