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space-time

Mathematics

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

We use the Navier-Stokes equations every day, for applications from building rockets to designing drugs. But sometimes they break – and we don’t know why

Comment

Chaotic streams of energy appear to slice through space

Physics

Is gravity a new type of force that arises from cosmic entropy?

Features

The NIRCam (Near-Infrared Camera) instrument on NASA?s James Webb Space Telescope?s reveals a portion of the Milky Way?s dense core in a new light. An estimated 500,000 stars shine in this image of the Sagittarius C (Sgr C) region, along with some as-yet unidentified features. A large region of ionized hydrogen, shown in cyan, contains intriguing needle-like structures that lack any uniform orientation. NASA, ESA, CSA, STScI, and S. Crowe (University of Virginia).

Space

The cosmos is vast, so how do we measure it?

Comment

Space

Bioplastic habitats on Mars could be built from algae

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Space

New Horizons images enable first test of interstellar navigation

¿ìè¶ÌÊÓƵ

Physics

Where does time actually come from?

Comment

Fireball in South Carolina. Screenshot from Facebook video posted by Kathryn Rose Farr on 26 Jun 2025

Space

Mystery fireball spotted plummeting to Earth over the US

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Vera C. Rubin Observatory

Video

Look inside the revolutionary Vera C. Rubin Observatory

Video

Trees against starry sky

Space

Why are the physical constants of the universe so perfect for life?

Features

In about 1.3 million years, the star system Gliese 710 is set to pass directly through our Oort Cloud, an event visualized in a dramatic scene in Encounters in the Milky Way. During its flyby, our systems will swap icy comets, flinging some out on new paths.

Space

¿ìè¶ÌÊÓƵ recommends a new space show at the Hayden Planetarium

The books, TV, games and more that ¿ìè¶ÌÊÓƵ staff have enjoyed this week

Culture

Space

Why you should join a watch party for the first Vera C. Rubin images

Comment

Physics

The radical idea that space-time remembers could upend cosmology

Features

Physics

Microwaves seem to experience imaginary time – and now we know how

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Physics

Fabulous time travel novel is part-thriller and part-romance

Culture

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