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John Harrison marine timekeeper at the Royal Observatory, Greenwich

Video

The clocks that helped define time from London's Royal Observatory

From sundials to atomic clocks, London's Royal Observatory explores the timepieces that helped shape the world

Video

Space

Most accurate space clock to launch – and count down to destruction

News

Qubit, abstract illustration.

Physics

Space could emerge from time

News

Elizabeth Ruth Belville receives a timekeeping certificate from an official at the Royal Greenwich Observatory, circa 1903. Once Belville has the accuracy of her watch, which she calls 'Arnold', confirmed in this way, her task is to 'take the time' round businesses in the West End and City of London. Belville's work was the means of ensuring standard time in the city before the advent of radio.

Video

Ruth Belville: How the Greenwich Time Lady kept London ticking

Video

The epic quest to redefine the second using the world's best clocks

Technology

The epic quest to redefine the second using the world's best clocks

Features

Physics

How nothing could destroy the universe

News

Mind

Memory illusion makes you think events occurred earlier than they did

News

The cosmic landscape of time that explains our universe's expansion

Space

The cosmic landscape of time that explains our universe's expansion

Features

Physics

Why exactly is the quantum world so weird?

Comment

Couple waiting at airport Description Couple sitting, waiting at the airport behind small squared glass wall, evoking a mirage, memory and dreams in blue and grey tones. Zurich, Switzerland. 2009

Mind

Sci-fi thriller Dissolution smartly interweaves time travel and memory

In his new novel Dissolution, Nicholas Binge plays with time travel and memory to craft a thriller reminiscent of Memento and Inception. It is well-deserving of its upcoming big screen treatment, says Emily H. Wilson

Culture

Physics

Time can move both forwards and backwards at the quantum scale

News

Physics

The 100-year-old symmetry theorem that is still changing physics today

News

Humans

Ancient humans understood the future and the past pretty much as we do

Comment

Mathematics

How a typo spoiled my proof of Fermat’s last theorem

News