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Satellite-filled sky

Earth

How worried should we be about noxious chemicals from dead satellites?

We have more satellites than ever before, but when they burn up they create a new kind of air pollution. Evidence is now revealing what effects this could have and how to tackle it

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Once Upon a Time in Space book - James Bluemel Cosmonaut Valeriy Polyakov seen in Mir?s window from Shuttle Discovery STS063-711-080 (6 Feb. 1995) --- Cosmonaut Valeriy V. Polyakov, who boarded Russia's Mir Space Station on January 8, 1994, looks out Mir's window during rendezvous operations with the Space Shuttle Discovery. This is one of 16 still photographs released by the NASA Johnson Space Center (JSC) Public Affairs Office (PAO) on February 14, 1995. Onboard the Discovery were astronauts James D. Wetherbee, mission commander; Eileen M. Collins, pilot; Bernard A. Harris, Jr., payload commander; mission specialists C. Michael Foale, Janice E. Voss, and cosmonaut Vladimir G. Titov. Page 134

Space

See the beauty of space, captured by the astronauts who experienced it

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Space

Is the universe really one big black hole?

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Do black holes exist and, if not, what have we really been looking at?

Space

Do black holes exist and, if not, what have we really been looking at?

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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

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Geometric 3d render shower of decorative starry short lines. Digital waterfall made futuristic straight shapes with random repetition. Tears outer space falling in rays bright stars.; Shutterstock ID 1952851798; purchase_order: -; job: -; client: -; other: -

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

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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

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

Space

Why auroras are so much brighter and more easily visible recently

The aurora borealis has been remarkably bright recently. Space weather physicist Tamitha Skov reveals what's going on and how worried we should be about a major solar storm

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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

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Space

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

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