This list of facts was created by asking the Google Gemini AI Black holes are regions of spacetime where gravity is so strong that nothing can escape Blue whales are filter feeders that eat krill Blue whales are the largest animals on Earth Blue whales can weigh as much as 33 elephants Cardiac muscle is found only in the heart Cartilage is a soft, flexible tissue that is found in the joints Comets are made of ice, dust, and rock DNA is a double helix structure DNA is made up of nucleotides, which contain adenine, guanine, cytosine, and thymine Exoplanets are planets that orbit stars other than our Sun Fossil fuels are fuels formed from the remains of prehistoric plants and animals Fungi are a kingdom of eukaryotic organisms Hair and nails are made of keratin, a protein Hummingbirds are the only birds that can hover Hummingbirds are the smallest birds in the world Hummingbirds can flap their wings up to 80 times per second Jupiter is the largest planet in our solar system Koalas are exclusively found in Australia Koalas are marsupials native to Australia Koalas sleep for an average of 22 hours per day Mars is often called the "Red Planet" Meteorites are meteors that reach Earth's surface Meteors are objects that enter Earth's atmosphere and burn up Mount Everest is located on the border between Nepal and Tibet Mount Everest is named after Sir George Everest Mount Everest is over 29,000 feet tall Mount Everest is the highest mountain in the world, reaching 8,848 meters Mount Everest was first climbed in 1953 Nebulae are clouds of gas and dust in space Neptune is the farthest planet from the Sun Octopuses are highly intelligent creatures Octopuses have three hearts and nine brains Platelets help to clot blood Pluto was reclassified as a dwarf planet in 2006 Quasars are extremely bright objects that are powered by supermassive black holes Red blood cells contain haemoglobin, which carries oxygen RNA is a type of nucleic acid that is involved in protein synthesis Smooth muscles are found in the walls of organs and blood vessels Supernovae are powerful explosions of dying stars Synapses are the gaps between neurons Synthetic biology is the design and construction of biological systems The alveoli are tiny air sacs in the lungs where gas exchange takes place The Amazon Rainforest covers about 40% of South America The Amazon Rainforest is home to more than 10 million species of plants and animals The Amazon Rainforest is home to the Amazon River, the second-longest river in the world The Amazon Rainforest is home to the largest number of animal species in the world The Amazon Rainforest is home to the largest number of plant species in the world The Amazon Rainforest is the largest rainforest in the world The Amazon Rainforest produces more than 20% of the world's oxygen The Andromeda Galaxy is the nearest large galaxy to the Milky Way The Arteries carry blood away from the heart The Beatles are considered one of the most influential bands in music history. The Beatles were formed in Liverpool, England The bones are made of bone tissue, which is a hard, mineralized tissue The bones provide structure and support for the body The brain is divided into the cerebrum, cerebellum, and brainstem The brain is the most complex organ in the human body The brainstem controls basic life functions such as breathing and heart rate The bronchi are two tubes that branch off from the trachea and lead to the lungs The bronchioles are smaller tubes that branch off from the bronchi The capillaries are tiny blood vessels that connect arteries to veins The cerebellum is responsible for balance and coordination The cerebrum is the largest part of the brain and is responsible for thought, feeling, and movement The circulatory system transports blood throughout the body The Colosseum could hold up to 80,000 spectators The Colosseum was built in the first century AD The Colosseum was damaged by an earthquake in 847 AD The Colosseum was once a stadium for gladiatorial contests The Colosseum was used for public executions in the Middle Ages The Drake equation estimates the number of extraterrestrial civilizations in our galaxy The Eiffel Tower is 330 meters tall The Eiffel Tower is a wrought iron lattice tower The Eiffel Tower is the tallest structure in Paris The Eiffel Tower was built for the 1889 World's Fair The Eiffel Tower was originally intended to be a temporary structure The endocrine system regulates hormone production The Fermi Paradox is the question of why we haven't found evidence of extraterrestrial civilizations yet The Forbidden City is now a museum The Forbidden City was built in the 15th century The Forbidden City was built to protect the emperor from his enemies The Forbidden City was home to Chinese emperors until 1912 The Forbidden City was the imperial palace of China for centuries The Gallbladder stores bile, which helps to break down fats The Grand Canyon is over 277 miles long The Grand Canyon is over a mile deep in some places The Grand Canyon was formed over millions of years by the Colorado River The Great Barrier Reef is home to over 1,500 species of fish The Great Barrier Reef is home to the largest number of coral species in the world The Great Barrier Reef is made up of over 2,900 individual reefs The Great Barrier Reef is the largest living structure on Earth The Great Wall of China is over 13,000 miles long The Great Wall of China is visible from space The Great Wall of China was built over a period of 2,000 years The human brain contains approximately 100 billion neurons The human brain is more complex than any computer The hypodermis is the innermost layer of the skin The Industrial Revolution began in Great Britain The Industrial Revolution led to the rise of urbanization and industrialization The integumentary system is the skin and its appendages The Large Hadron Collider is located at CERN, near Geneva, Switzerland The Large Hadron Collider is the world's largest particle accelerator The Large Hadron Collider was used to discover the Higgs boson The liver filters toxins from the blood The lymphatic system helps to fight infection The lymphatic system is also known as the immune system The Mariana Trench is home to the Challenger Deep The Mariana Trench is home to unique deep-sea creatures The Mariana Trench is over 10,000 meters deep The Mayan civilization was highly advanced in astronomy and mathematics The Mayan civilization was known for its advanced calendar system The Milky Way is a spiral galaxy that contains our solar system The Mona Lisa has no eyebrows The Mona Lisa is a famous portrait painting of Lisa del Giocondo The Mona Lisa is housed in the Louvre Museum in Paris The Mona Lisa was painted by Leonardo da Vinci The Mongol Empire was founded by Genghis Khan The Mongol Empire was the largest contiguous land empire in history The Moon is Earth's only natural satellite The Nile River flows through 11 countries The Nile River is the longest river in the world The Nile River is the main source of water for Egypt The pancreas produces insulin and glucagon, which regulate blood sugar levels The periodic table organizes the elements based on their atomic number and properties The periodic table was created by Dmitri Mendeleev The Pyramids of Giza are the largest ancient structures in the world The Pyramids of Giza are the oldest of the Seven Wonders of the Ancient World The Pyramids of Giza are the only one of the Seven Wonders of the Ancient World that still stands The Pyramids of Giza were built over 4,500 years ago The Renaissance saw the rise of humanism and individualism The Roman Empire at its peak stretched from Britain to North Africa The Roman Empire was conquered by Germanic tribes The Rubik's Cube has over 43 quintillion possible combinations The Rubik's Cube was invented in Hungary The Sahara Desert is about the size of the United States The Sahara Desert is home to the world's largest sand dunes The Sahara Desert is the driest place on Earth The Sahara Desert is the largest desert in the world by area The Sahara Desert was once a lush, green landscape The skin is made of three layers: the epidermis, dermis, and hypodermis The skin is the largest organ in the human body The speed of light in a vacuum is approximately 300,000 kilometers per second The speed of light is a constant in the universe The Statue of Liberty is a symbol of freedom and democracy The Statue of Liberty was a gift from France to the United States The Statue of Liberty was dedicated in 1886 The Statue of Liberty was designed by French sculptor Frédéric Auguste Bartholdi The Statue of Liberty was designed to represent the goddess Libertas The Sun is a giant ball of plasma The Super Bowl is typically held in a major U.S. city The Super Bowl is typically held on the first Sunday of February The Taj Mahal is made of white marble The Taj Mahal was built by Mughal Emperor Shah Jahan The Taj Mahal was built to honor Mumtaz Mahal, the wife of Shah Jahan The Titanic sank after hitting an iceberg in the North Atlantic Ocean The Titanic sank in the North Atlantic Ocean in 1912 The Titanic was the largest ship in the world at the time of its sinking The ureters are two tubes that carry urine from the kidneys to the bladder The urethra is a tube that carries urine out of the body The Venus flytrap is native to North and South Carolina Uranus rotates on its side Venus is the hottest planet in our solar system Viruses are smaller than bacteria and can only replicate inside living cells