Earth: The Only Known Home to Life

Earth is the third planet from the Sun and the only one known to support life.
About 71% of Earth’s surface is covered by water, mostly in oceans.
Earth has a protective atmosphere rich in nitrogen and oxygen.
The planet’s magnetic field shields us from harmful solar radiation.
Earth’s rotation is gradually slowing down—by about 1.7 milliseconds per century.
The planet’s crust is divided into tectonic plates that move and shape continents.
Earth’s Moon helps stabilize its tilt, creating relatively stable seasons.
Life has existed on Earth for at least 3.5 billion years.
Earth’s biosphere contains millions of species, many still undiscovered.
It is the only planet known to have liquid water on the surface today.