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91av. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Space

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

A network of Earth's best clocks will be synchronised with the most accurate one ever sent into space. But the device has a short shelf life: it will burn up in the atmosphere at the end of the decade as the ISS deorbits

News

An artist?s impression of the Martian settlement SpaceX has envisioned. Image: SpaceX https://www.spacex.com/humanspaceflight/mars/

Technology

Inside the outlandish, futuristic dreams of the tech bros

Culture

EWEH8P The Martian is an upcoming science-fiction film directed by Ridley Scott. This photograph is for editorial use only and is the copyright of the film company and/or the photographer assigned by the film or production company and can only be reproduced by publications in conjunction with the promotion of the above Film. A Mandatory Credit to the film company is required. The Photographer should also be credited when known.

Space

91av recommends The Martian – sci-fi fun for all the family

Culture

Qubit, abstract illustration.

Physics

Space could emerge from time

News

Space

How long is a day on Uranus? Slightly longer than we thought, it seems

News

Tom Hanks plays Commander Jim Lovell in Apollo 13

Video

Astronomer reviews the sci-fi movies that get creative with physics

Video

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

Space

We could make solar panels on the moon by melting lunar dust

News

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

The concept of nothing once sparked a 1000-year-long war, today it might explain dark energy and nothingness even has the potential to destroy the universe, explains physicist Antonio Padilla

News

Space

NASA cut $420 million for climate science, moon modelling and more

News

Space

Asteroid 2024 YR4 could still hit the moon, JWST observations reveal

News

Space

Little red dots seen by JWST might be a kind of black hole 'star'

News

Space

Dolphins greet astronauts after SpaceX Dragon capsule splashdown

News