91av

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

Lost in Space-Time

Each month, we hand over the keyboard to a physicist or mathematician to tell you about fascinating ideas from their corner of the universe. You can sign up to the Lost in Space-Time newsletter here.
Sign up to our newsletter

Space

An early hint of cosmic dawn has been seen in a distant galaxy

A galaxy inside a bubble may be evidence that the universe was starting to become transparent 330 million years after the big bang

News

Space

German company set for first commercial rocket launch from Europe

News

Is our cosmos just a membrane on the edge of a far stranger reality?

Space

Is our cosmos just a membrane on the edge of a far stranger reality?

Features

Space

Giant Milky Way-like galaxy formed unusually soon after the big bang

News

Mind

Memory illusion makes you think events occurred earlier than they did

News

NASA Webb Wows With Incredible Detail in Actively Forming Star System At the center is a thin vertical cloud known as Lynds 483 that is shaped like an hourglass with irregular edges. At lower center are two discrete bright white, tiny blobs of light that have raced away from the hidden central stars. The top lobe shows a more prominent orange U-shape. Orange bleeds into light purple, and brighter pink at its edges. Some background stars are visible through sections of this lobe. Higher up, there is an orange arc. Some brighter pink material extends to the top edges near the center. In the lower lobe, less orange is visible. More opaque light purple is in its top third, rippling out into semi-transparent blues and pinks. The lower lobe has more texture. V-shapes left and right of the lobes are darkest, and the background stars in these areas appear orange. Elsewhere, the black background of space is clearer, speckled with tiny white stars and faint orange galaxies. Shimmering ejections emitted by two actively forming stars make up Lynds 483 (L483). High-resolution near-infrared light captured by NASA?s James Webb Space Telescope shows incredible new detail and structure within these lobes. Credits: NASA, ESA, CSA, STScI

Space

See a shimmering hourglass-shaped star system in exquisite detail

News

Rhiannon Adam, United Kingdom, Finalist, Professional competition, Creative, Sony World Photography Awards 2025

Space

Eerie image of a space-bound rocket among photo contest finalists

Regulars

Helios at the Bath Assembly Rooms, Jan 2025

Space

91av recommends Helios, Luke Jerram's giant sun sculpture

Culture

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?

We can describe the quantum realm using straightforward mathematics – but once we try to translate these ideas into the real world, things get weird. Our quantum columnist Karmela Padavic-Callaghan explains why

Comment

Technology

US military wants to grow giant biological structures in space

News

Comment

The best new science fiction books of March 2025

Culture

Space

Spacecraft may need to be dirtier to keep astronauts healthy

News

Mind

Sci-fi thriller Dissolution smartly interweaves time travel and memory

Culture

Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop