Christmas star: Planets set to align in the night sky
"Conjunctions are great things to see - they happen fairly often - but [for the planets to be this close] is quite remarkable," Prof Tim O'Brien, an astrophysicist from the University of Manchester, told BBC News.
The two planets - the largest in the Solar System and some of the brightest objects visible in the night sky - have not been this close to each other in a dark sky for 800 years. And while the UK forecast is not at all conducive to star-gazing, it could change.
"It changes hourly - that's just the British weather and that's astronomy for you," said Prof O'Brien.
"The planets will be setting in the southwest, so you need to get out there as soon as the sky is going dark.
"None of us is going to be around in another 400 years, so just keep an eye on the weather and pop outside if you get the chance."
Planets to align for first time in centuries in ‘Christmas star’ effect
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