Earth is the planet known for its beautiful blue color, which is primarily due to the vast oceans covering about 71% of its surface. This blue appearance is visible from space and is a defining characteristic of our planet, reflecting the abundance of water that supports life. Earth is unique in its capacity to sustain diverse ecosystems and human life, making it our only known habitable planet in the universe. The presence of an atmosphere, suitable climate, and water in various forms contribute to the biodiversity and environmental conditions that make Earth a remarkable home.