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
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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
We thought planets are built as huge boulders smash together. But if it is pebbles instead, that better explains why planets all spin the same way