Here are ten amazing facts about our world:
The deepest place on Earth is the Mariana Trench in the Pacific Ocean. It's a staggering 36,201 feet (11,034 meters) deep, almost seven miles! That's so deep, that if you put Mount Everest at the bottom of the trench, it wouldn't even reach the surface!
The longest river in the world is the Nile River in Africa. It stretches for a whopping 4,132 miles (6,650 kilometers) and flows through 11 countries.
Earth is not actually round, it's an oblate spheroid. This means it bulges slightly at the equator and is flattened at the poles, due to the centrifugal force caused by its rotation.
The largest living structure on Earth is the Great Barrier Reef. This incredible underwater ecosystem is made up of billions of tiny coral polyps and stretches for over 2,300 kilometers (1,400 miles) along the coast of Australia.
There are more trees on Earth than stars in our Milky Way galaxy. Estimates suggest there are around 3 trillion trees on Earth, while our galaxy is thought to contain between 100 billion and 400 billion stars.
The hottest place on Earth is Lut Desert in Iran. Temperatures here have been recorded as high as 159 degrees Fahrenheit (70.6 degrees Celsius).
The world's quietest room is located at Orfield Laboratories in Minnesota. This anechoic chamber is designed to absorb sound waves almost completely, making it so quiet that people can start to hallucinate after just a few minutes inside.
The Earth's magnetic poles are constantly flipping. These flips happen every few hundred thousand years, on average. The last flip is estimated to have occurred around 780,000 years ago.
There are more stars in the universe than grains of sand on all the beaches on Earth. This is mind-bogglingly difficult to imagine, but estimates suggest there are septillions (that's 1 followed by 24 zeros) of stars in the observable universe.
We still haven't explored most of the ocean. The ocean depths are a vast and mysterious frontier, with an estimated 95% of the ocean floor remaining unexplored.
