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Space

Meteorite causes rethink of how and when our solar system formed

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the asteroid belt, but now a meteorite from the outer solar system is rewriting that view

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Space

Was Planet Nine exiled from the solar system as a baby?

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Space

New dwarf planet spotted at the edge of the solar system

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Space

Risk of a star destroying the solar system is higher than expected

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Space

How long is a day on Uranus? Slightly longer than we thought, it seems

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Space

We've spotted auroras on Neptune for the first time

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Chemistry

Water can turn into a superacid that makes diamonds

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Most quakes on Mars happen during the summer – and we don’t know why

Space

Most quakes on Mars happen during the summer – and we don’t know why

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G0T7G0 Milky Way streaks across the sky at Broad Haven in Pembrokeshire with the iconic Church Rock out to sea. Also pictured is Saturn

Space

How to tell a planet from a star – and one planet from another

Regulars

Space

How to see every planet in the solar system at once this week

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this planetary parade.

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Space

How to see all the solar system’s planets in the night sky at once

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Space

The physicist on a mission to understand Mercury's epic solar storms

Features

Space

Saturn’s rings may be far older than we thought

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Space

Distant dwarf planet Makemake might have a surprising ice volcano

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