Human space exploration has a rich history marked by groundbreaking achievements and extraordinary technological advancements. It all began with the launch of the first artificial satellite, Sputnik 1, by the Soviet Union in 1957, which triggered the space race between the United States and the Sovi

Gravity is the force that attracts objects toward one another, and on Earth, it pulls objects toward the center of the planet. This force is responsible for keeping everything on the surface of the Earth, from the atmosphere to oceans and even the objects we use daily. The force of gravity is propor

 An ecosystem is a community of living organisms interacting with each other and their physical environment. These interactions involve a variety of species, including plants, animals, microorganisms, and their surroundings, such as water, air, and soil. Ecosystems can vary in size from a small

The human respiratory system is responsible for the intake of oxygen and the expulsion of carbon dioxide, which is essential for maintaining the body’s metabolic functions. The process begins when air enters through the nose or mouth, passing down the trachea and into the bronchi, which divide