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Tauri d compared to Earth

Space

Super-low-density worlds reveal how common planetary systems form

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one young star should help us understand how such systems form

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Space

Rare exoplanet alignment set for 2026 – but we are likely to miss it

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Artist's impression of a free-floating-planet

Space

Rare Saturn-sized rogue planet is first to have its mass measured

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The essential guide to proving we’ve found alien life

Space

The essential guide to proving we’ve found alien life

Features

Space

Hopes of finding aliens were raised in 2025 – but quickly faded

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This is a false-color composite image of the Fomalhaut System taken with the Hubble telescope's Space Telescope Imaging Spectrograph (STIS) instrument in 2010 and 2012. The black circle at the center of the image blocks out the light from the bright star, allowing reflected light from the belt and planet to be photographed.

Space

Two asteroids crashed around a nearby star, solving a cosmic mystery

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artist's concept of what exoplanet PSR J2322-2650b may look like

Space

Strange lemon-shaped exoplanet defies the rules of planet formation

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Space

General relativity might save some planets from death

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Space

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

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Space

Signs of alien life on exoplanet K2-18b have all but vanished

Earlier this year, astronomers reported possible evidence of life on another planet – but new observations from JWST suggest the apparent biosignature isn’t there after all

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Space

Water might be even more important for alien life than we thought

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Space

Stellar flares may hamper search for life in promising star system

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Space

Signs of alien life on exoplanet K2-18b may just be statistical noise

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Space

Exoplanet found in odd perpendicular orbit to brown dwarf star pair

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