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Sun's disc

Space

Sun's rotation is slowed down by its own photons

The sun's layers slow the escape of photons of sunlight, and when they finally stream away they return the favour by slowing the rotation of its outer layer

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Venus

Space

Old ��è��Ƶ: Into the twilight zone of dubious causation

Regulars

Tiny spacecraft could brake at exoplanet using alien starlight

Space

Tiny spacecraft could brake at exoplanet using alien starlight

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A meteorite from the Sahara

Earth

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

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This smooth rock may be a metal meteorite on Mars

Space

Curiosity finds Mars rock that may be a meteorite made from iron

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Metal asteroid and Trojans selected for next NASA missions

Space

Metal asteroid and Trojans selected for next NASA missions

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Large asteroid impacts may be rare, but we should be prepared

Earth

Large asteroid impacts may be rare, but we should be prepared

Comment

Man having a check up

Health

Viruses may have evolved to hit men hard but go easy on women

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A swirl of material coming off the surface of the sun

Space

Fresh look at old data shows the sun is surprisingly sluggish

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City rooftops have been collecting cosmic dust that falls from the sky

Space

Cosmic dust grains found on city rooftops for the first time

Sifting through muck trapped in roof gutters in Paris, Oslo and Berlin yielded 500 tiny particles from the birth of the solar system 4.6 billion years ago

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Space

ESA approves 2020 ExoMars rover despite crash earlier this year

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Earth

Moon-dust cake mix shows moon may have had water from the start

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Space

A dash of hydrogen and methane could have kept Mars warm

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Earth

Window to hell: Io's strongest volcano changes face as we watch

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