What's the fastest helicopter that was built?
What's the fastest man made object that was built?
What is the deepest location that submarine has reached?
What's the largest submarine that was built?
What's the largest battleship that was built?
What's the largest aircraft carrier that was built?
What's the heaviest tank that was built?
What's the fatest car that was built?
what's the largest artillery that was built in human history?
In the history of humanity, what was the heaviest aircraft built?
In human history, what has been the fastest aircraft?
When has humanity come close to nuclear war?
How many times have humans landed on the moon?
What is the largest space rocket been made?
How a space rocket is lanuched by stages?
Explain to a middle school student that how a space rocket is constructed by components.
Explain to a middle school student that how space rockets are built in progress.
Explain to a five years old that how space rockets are built.
How to build a toy rocket?
Explain how to make a tv to a five-year-old.
Explain how to make fireworks to a five-year-old.
Explain to a five years old that how to make gasline.
Explain how to make cpu to a five-year-old.
How to explain laser light to a five years old?
What is hawking radiation?
How to explain dark matter to a five years old?
Why are there crushed stones alongside rail tracks?
Can ai (artificial intelligence) detect open-ended questions?
What is an open-ended question?
Do saturn's rings orbit the planet?