Question

What is the biggest thing in the world ​

Answer 1

Question :-

What is the biggest thing in the world?

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largest object in the universe is the Hercules–Corona Borealis Great Wall, which is the largest known superstructure in the universe

Answer 2

The biggest supercluster known in the universe is the Hercules-Corona Borealis Great Wall. It was first reported in 2013 and has been studied several times. It's so big that light takes about 10 billion years to move across the structure. For perspective, the universe is only 13.8 billion years old.