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space-time

Physics

Ultracold clocks could reveal how quantum physics alters time

The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test the boundaries of physics

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A bright star emitting streaks of light that curve outwards as the star moves across the night sky

Space

How faster-than-light explosions could reveal the universe’s secrets

Features

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Physics

Should it be space-time or spacetime – and why does it matter anyway?

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NASA Astronaut John Glenn inside a vacuum chamber

Video

Inside the missions that made the moon landings possible

Video

Lunar Crater Radio Telescope: Illuminating the Cosmic Dark Ages This illustration depicts a conceptual Lunar Crater Radio Telescope on the Moon?s far side. The early-stage concept is being studied under grant funding from the NASA Innovative Advanced Concepts program but is not a NASA mission. Credit: Vladimir Vustyansky

Space

Could a huge lunar telescope be our best chance of spotting aliens?

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John Glenn during the fiery re-entry, holding steadfast, believing his heatshield had come loose and he may burn up in the atmosphere - the capsule is illuminated in orange light due to intense heat.

Space

NASA's first space photos restored in stunning detail

Regulars

The northern lights, or aurora borealis, in the UK in 2024

Space

Why auroras are so much brighter and more easily visible recently

Features

Space

CPR in space could be made easier by chest compression machines

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Space

New moon discovered orbiting Uranus is its smallest one

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Physics

Jupiter's moon Ganymede could be a giant dark matter detector

Large pieces of dark matter hitting Jupiter’s largest moon would form distinctive craters in its icy surface, and upcoming space missions might be able to spot them

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Space

6 of the most fascinating moments in the life of our solar system

Features

Space

A planet the size of Saturn could orbit the nearest sun-like star

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Physics

What happens to light's energy when it redshifts? It's complicated

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Mathematics

These centuries-old equations predict flowing fluid – until they don’t

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