Scientists estimate that Earth is 4.6 billion years old. The major elements of the Earth's atmosphere are
carbon dioxide (0.03%), argon (.93%), oxygen (21%), and nitrogen (78%). The densest planet in the solar system is Earth.
The Earth's tides are caused by the gravitational pull of the Moon toward the Earth. The solar system's densest planet is Earth. The only planet that isn't called after
a deity or goddess from mythology is Earth. There once existed a belief that the Earth was the center of the cosmos. The Earth's rotation is progressively becoming less rapid.
The biggest of the terrestrial planets, Earth is located third from the Sun. As far as we know, only Earth—which originated 4.54
billion years ago—supports life on other planets. The only planet in our solar system that isn't called after a Roman or Greek deity is Earth.