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planets

Pluto's icy nitrogen heart makes its atmosphere spin backwards

Space

Pluto's icy nitrogen heart makes its atmosphere spin backwards

Every day on Pluto, nitrogen puffs out the icy world’s heart-shaped plain into the atmosphere, and every night it refreezes, creating winds unlike any we’ve seen before

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Mercury

Space

Mercury’s outer layers may have been stripped off by a young Venus

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Imagined Mars settlement

Space

Should SpaceX be allowed to contaminate Mars with Earth microbes?

Insight

dust clouds in space

Space

We finally know how whole planets grow from tiny clumps of dust

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Leigh Fletcher

Video

Voyage to Jupiter: What the Juno mission can teach us

Video

Michele Bannister

Video

The inside story on 'Oumuamua and other interstellar worlds

Video

Sheila Kanani at 51¶¯Âþ Live

Video

Exploring the wonders of the solar system

Video

Seize your chance to spot Mercury, the solar system's smallest planet

Space

Seize your chance to spot Mercury, the solar system's smallest planet

Regulars

night sky

Space

See Venus and Jupiter next to each other in the sky this week

Regulars

sun

Technology

How to watch Mercury's transit of the sun with just binoculars

On 11 November, the innermost planet of the solar system will make a rare crossing of the face of the sun. Here's how to see it without expensive kit

Regulars

Space

Surprisingly round asteroid may actually be the smallest dwarf planet

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Space

Strange volcanic domes on Venus may be made from hot crystal mush

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Space

Spot six planets in the sky this week: Mercury, Mars, Uranus and more

Regulars

Space

Stars that eat planets can start spinning so fast they rip apart

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