Earth

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Earth, the world we call home,[n 5] (Greek: Gaia;[n 6] Latin: Terra) is a planet of immense size and complexity, situated as the third major body in our Solar System. It's also the only confirmed haven for life in the vast expanse of the Universe. Earth stands out from other planets as the densest object in its orbit and the largest of four terrestrial worlds. Radiometric dating and other evidence suggest that Earth was formed about 4.54 billion years ago,[27][28][29] a time frame that's still shrouded in mystery. The planet's gravity has a profound impact on nearby celestial bodies, most notably the Sun and the Moon, its sole natural satellite. Each orbit around the Sun sees Earth spin over 365 times on its axis, resulting in an annual cycle of approximately 365.26 days.[n 7] The tilt of Earth's rotation axis gives rise to varying seasons across its surface. The gravitational connection between Earth and the Moon not only generates ocean tides but also stabilizes Earth's orientation and gradually slows down its rotation.[31]