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(CNN) -- Godspeed!A historic cathedral in England has installed a giant indoor fairground slide, supposedly so that visitors can see its roof up close.The 50-foot-high ride, known in Britain as a helter-skelter, was unveiled on Thursday at Norwich Cathedral in eastern England and will be open to the public to enjoy for 10 days.The church, completed in 1145, insists the initiative is no gimmick -- in fact, a clergyman says the idea came to him while he was visiting the Sistine Chapel in the Vatican."I had the slightly risky thought of, 'I know this is amazing, but actually the ceiling at Norwich Cathedral is every bit as wonderful,'" Reverend Canon Andy Bryant told the Press Association news agency."We have one of the greatest collections of medieval roof bosses anywhere in northern Europe. The trouble is they are so high up that most people never get a chance to really appreciate them.""And so was born the idea -- could we get people up higher to these roof bosses and so appreciate that they are exquisite art as they are the most beautiful pieces of stone carving but also the story that's captured within them, which is the story of the Bible."The installation, set up in front of a large stained glass window, is part of a program called "Seeing It Differently."It follows a similar move by Rochester Cathedral, which unveiled a mini golf course in its central area last month -- and comes as churches across the UK struggle to stem a decline in attendance.In a post on the cathedral's website, Bryant admitted that the idea could prove controversial with churchgoers."I get why for some the image of a giant helter-skelter sitting in this great Nave feels slightly shocking," he wrote. "It does provoke and it begs the question, what is this space for? The walls of this great building have seen many things through their 900 years and I suspect will take this latest arrival in their stride.""But climbing 50ft above the Nave floor will helps us see this space differently, it will give us a new perspective. It is precisely because it is not what we usually do that it can speak to us, challenge us and invite us to see the space differently, and to see ourselves and one another differently, even God differently."The ride is scheduled to remain open until August 18. 2297

(CNN) -- Scientists have discovered a "monster black hole" so massive that, in theory, it shouldn't exist.It's a stellar black hole — the type that forms after stars die, collapse, and explode. Researchers had previously believed that the size limit was no more than 20 times the mass of our sun because as these stars die, they lose most of their mass through explosions that expel matter and gas swept away by stellar winds.This theory has now been toppled by LB-1, the newly-discovered black hole. Located about 15,000 light years away, it has a mass 70 times greater than our sun, according to a press release from the Chinese Academy of Sciences.The findings were published by Chinese researchers in the journal Nature on Wednesday."Black holes of such mass should not even exist in our galaxy, according to most of the current models of stellar evolution," said Liu Jifeng, head of the team that made the discovery. "LB-1 is twice as massive as what we thought possible. Now theorists will have to take up the challenge of explaining its formation."Scientists are now scratching their heads at how LB-1 got so huge.The Chinese team has proposed a number of theories. LB-1's sheer size suggests that it "was not formed from the collapse of only one star," the study said -- instead, it could potentially be two smaller black holes orbiting each other.Another possibility is that it formed from a "fallback supernova." This is when a supernova -- the last stage of an exploding star -- ejects material during the explosion, which then falls back into the supernova, creating a black hole.This fallback formation is theoretically possible, but scientists have never been able to prove or observe it. If this is how LB-1 formed, then we may have "direct evidence for this process" for the first time, the study said.LB-1 is not the biggest black hole ever discovered -- but it may be the largest of its kind. There are several types of black holes, and stellar black holes like LB-1 are on the smaller side, according to NASA. Supermassive black holes are much bigger -- they can be billions of times the mass of our sun.Scientists believe supermassive black holes may be connected to the formation of galaxies, as they often exist at the center of the massive star systems -- but it is still not clear exactly how, or which form first.Stellar renaissanceStellar black holes are believed to be commonly scattered across the universe, but they are difficult to detect because they do not normally emit X-rays -- only doing so when they gobble up gas from a star that has ventured close enough. They are so elusive that scientists have only found, identified, and measured about two dozen stellar black holes, the press release said.The researchers at the Chinese Academy of Sciences tried a different approach. Instead of looking for X-rays emitted by black holes, the team looked for stars that were orbiting some invisible object, being pulled in by its gravity.Their efforts paid off -- they soon spotted a giant star eight times heavier than the sun, orbiting around what turned out to be LB-1."This discovery forces us to re-examine our models of how stellar-mass black holes form," said David Reitze, a physicist at the University of Florida. In May, Reitze's team made its own breakthrough discovery -- observing the never-before-seen collision of a neutron star and a black hole, which sent out ripples in space and time.These twin discoveries -- the collision, and now LB-1 -- indicate that scientists are reaching "a renaissance in our understanding of black hole astrophysics," said Reitze in the press release.There have been several other discoveries over the past year that have added to this renaissance. In October, researchers discovered what they believe to be a new type of black hole, smaller than the other kinds. And earlier this week, astronomers discovered a black hole that is actually helping baby stars grow instead of destroying them. 3971

(KGTV) - Is a New York Christmas tree lot really selling trees for ,500 apiece?Yes.'Soho Trees' is offering 20-foot Fraser Firs for ,500 each. The owner even says they're selling out!Other vendors nearby are selling similar trees for less, but not by much.They blame the hefty price tags on a shortage of the popular Fraser Fir. 341

(KGTV) - Did President Trump decide in a meeting this week to lock down the country in the next 48 to 72 hours?No.Messages are going around social media stating a friend or relative just got out of a meeting in which the President made that decision.There was no such meeting. But the rumor was so widespread, the National Security Council sent out a tweet making clear there is no national lockdown at this time. 422

(KGTV) - Has Ancestry.com determined that Tom Hanks and Fred Rogers are 6th cousins?Yes!They share the same great, great, great, great, great grandfather who immigrated from Germany to America in the 18th century.Hanks plays Rogers in the movie "A beautiful day in the neighborhood." 291