The meaning of MIND-BOGGLING is mentally or emotionally exciting or overwhelming. How to use mind-boggling in a sentence.
The unobservable Universe must extend for at least ~400 times the extent of the visible Universe we can see, meaning that our 92 billion light-year diameter Universe is less than one-64-millionth of the minimum volume of what’s out there. (Credit: The Millennium Simulation, V. Springel ...