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Saturn’s moons could reassemble after a cosmic smash-up

Space

Saturn’s moons could reassemble after a cosmic smash-up

Any surviving debris from a collision would forge a new patchwork moon – so that’s not how Saturn got its rings

News

Diagram of the shape of a synestia – like a red blood cell or a doughnut

Space

Huge impact could have smashed early Earth into a doughnut shape

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Zircon mineral grains

Earth

Early Earth was covered in a global ocean and had no mountains

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Protoplanetary disc around young star TW Hydrae.

Space

Earth may have been born in a huge flare-up of the young sun

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Mars and asteroids

Space

Mars Trojans may be part of a planet that was destroyed long ago

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meteorite artwork

Earth

Rocks of ages: How meteorites reveal the solar system's history

Features

Space

Distant DeeDee could be a new dwarf planet

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Mars

Space

Mars is so small because Jupiter shook up its formation

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MAVEN spacecraft orbiting Mars

Space

NASA orbiter shows Mars lost 90 per cent of its CO₂ to space

News

pluto and charon

Space

Pluto is still an ex-planet, no matter what its fans think

A fresh attempt to revive full planet status for Pluto is a non-starter. Astronomer Michael Brown explains why hopes of a comeback are futile

Comment

Space

Magnetic meteorites narrow down solar system’s birthdate

News

Earth

Planet Earth makes its own water from scratch deep in the mantle

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Earth

Earth’s water must have arrived here earlier than we thought

News

Space

‘Alien megastructure’ signal may be due to star eating a planet

News