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solar power

Identity-crisis comet may really be closest asteroid to the sun

Space

Identity-crisis comet may really be closest asteroid to the sun

Observations of a supposed comet that skirts close to the sun reveal it doesn't really act like one – so may be a different kind of space rock altogether

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Unnamed dwarf planet may be third largest in the solar system

Space

Unnamed dwarf planet may be third largest in the solar system

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Kepler doubles exoplanet population with 1284 new planets

Space

Kepler doubles exoplanet population with 1284 new planets

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Super-salty Turkish lakes may hold key to spotting life on Mars

Earth

Super-salty Turkish lakes may hold key to spotting life on Mars

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Graph showing the gravitational wave signal from LIGO

Space

Gravitational waves: Your cheat sheet on the find of the decade

Features

Colourful topographic map of Mercury

Space

First global Mercury map shows its hills and valleys in detail

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Mercury crossing the sun

Space

How to watch Mercury pass in front of the sun today

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swansong earth

Earth

Last days of Earth: Life in 7 billion years AD

Features

Strange Manx comet is time capsule from the early solar system

Strange Manx comet is time capsule from the early solar system

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Makemake shining brightly, with a small, faint blob just above it and a big arrow pointing to it

Space

Never-before-seen moon spotted around dwarf planet Makemake

Astronomers have previously looked for a satellite orbiting the Kuiper belt object and found nothing, so were surprised when one turned up

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Space

Cassini gears up for final fiery plunge into Saturn's atmosphere

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Earth

How two tiny dots defy the history of life and the solar system

Features

Space

Water telescope’s first sky map shows flickering black holes

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Space

Saturn probe Cassini hoovers up dust from distant stars

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