Science
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Collision will ‘cause fireworks’ but probably won’t happen for about 2.5 billion years -
Chang’e 4 will test soil composition, try to grow plants, and listen for traces of Big Bang
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‘The Nation’s T rex’ will stand upright for the first time in 66m years alongside 720 specimens as part of a five-year overhaul -
Images of rock on the edge of the solar system were taken on the most distant flyby in history -
Scientists celebrate probe’s successful completion of most distant space flyby in history
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US study finds some people needlessly avoid foods while others do not have life-saving medication -
Imperial College scientists find DNA damage in sperm could be undetected cause -
Key issues
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The physicist’s former research student recalls their close relationship at Cambridge, the sheer might of his intellect, and how he once bored the great man to sleep
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At the COP24 conference, leaders lack the urgency felt by communities on the frontlines of a global threat -
The history of artificial intelligence is entwined with state and corporate power, says Stephen Cave, executive director of the Leverhulme Centre for the Future of Intelligence -
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Calculations to kick start the new year -
The solutions to today’s quiz and puzzle -
Test your knowledge of Tweet-speak, plus a social media maths puzzle -
The solution to today’s puzzle
Multimedia
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Some scientists think a supervolcano in India led to the demise of the dinosaurs. Graihagh Jackson investigates -
The rover from China's Chang'e 4 probe separated from its lander on Thursday evening after the probe touched down on the far side of the moon. It is the first spacecraft in the world to achieve a lunar soft landing
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Nasa's Juno craft has captured giant, chaotic weather systems plus taken new measurements that will help build unprecedented map of the planet’s interior
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Tim Peake beat more than 8,000 applicants to the job. Here, he shares some images of the training he underwent, as seen in his new hardback, The Astronaut Selection Test Book -
Flight controllers at Nasa’s Jet Propulsion Laboratory in California react to the successful landing of InSight, a spacecraft designed to explore Mars's interior
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A plane with no moving parts in its propulsion system has successfully flown for a distance of 60 metres, proving that heavier-than-air flight is possible without jets or propellers
Did you solve it? 2019 in numbers