Did you know that the speed of light is approximately 186,282 miles per second? This means it can travel around the Earth 7.5 times in just one second! Another fascinating fact is that a bolt of lightning can reach temperatures of about 30,000 kelvins, which is five times hotter than the surface of the sun. One of the most abundant elements in the universe is hydrogen. It makes up about 75% of its elemental mass and can be found in stars, gas giants, and even in water molecules. The Earth's core is believed to be composed mainly of iron and nickel, with temperatures reaching up to 9,000 degrees Fahrenheit. This extreme heat is what creates the Earth's magnetic field. Stars can shine light for billions of years due to the process of nuclear fusion at their cores. This process turns hydrogen into helium, releasing a tremendous amount of energy in the form of heat and light. The concept of gravity was first described by Sir Isaac Newton, who formulated the law of universal gravitation in the 17th century. This law explains the force of attraction between objects with mass. These fascinating facts about physical sciences showcase the incredible complexity and wonder of the natural world. Keep exploring and learning more about the laws that govern our universe!