An astronaut is planning a unique test of Sir Isaac Newton’s theory of gravity — by taking an original piece of the scientist’s famous apple tree on a 8km journey into space.
British-born Piers Sellers plans to release the 10cm fragment in zero gravity during his 12-day mission to the International Space Station, as a tribute to Newton’s discovery of gravity in 1666, when he watched an apple fall to the ground in his garden.
“I’ll take it up and let it float around for a bit, which will confuse Isaac,” said the 55-year-old NASA astronaut, a veteran of two previous shuttle missions and a graduate of the University of Edinburgh.
“While it’s up there, it will be experiencing no gravity, so if it had an apple on it, the apple wouldn’t fall,” he said. “I’m pretty sure that Sir Isaac would have loved to see this, assuming he wasn’t spacesick, as it would have proved his first law of motion to be correct.”
The tree fragment, engraved with the scientist’s name, is stowed aboard the shuttle Atlantis at Cape Canaveral, Florida, awaiting Friday’s blast-off.
The stunt is part of the 350th anniversary celebrations of the Royal Society, of which Newton, who died in 1727, was a president.
The society hopes to display the fragment at its 10-day festival of science and arts at London’s Southbank Centre next month and later at its headquarters in Carlton House Terrace, London, where it will join exhibits including Newton’s first telescope and his death mask.
Several sections stripped from the tree, which still stands at Woolsthorpe Manor, the physicist’s home in Lincolnshire, are stored in the society’s vaults as part of a huge collection of Newton memorabilia.
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