Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust.

2 天之前 · Earth, third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its single most outstanding feature is that its near-surface environments are the only places in the universe known to harbour life. It is designated by the symbol ♁.

2024年12月5日 · Earth is the planet we live on, one of eight planets in our solar system and the only known place in the universe to support life. Earth is the third planet from the sun, after Mercury and Venus, and before Mars. It is about 150 million kilometers (about 93 …

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles,...

2025年1月22日 · Earth – our home planet – is the third planet from the Sun, and the fifth largest planet. It’s the only place we know of inhabited by living things. While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface.

2024年12月17日 · Earth is an inner planet in the solar system and it is very much like the other inner planets, at least in its size, shape, and composition. But many features make Earth very different from the planets and any other planet that we know of so far.

2021年4月27日 · Earth is the 6th largest solar system object, with a mean radius of 6,371 kilometers, and the 5th-largest planet after Jupiter, Saturn, Uranus, and Neptune. About 70% of the Earth’s total surface consists of water from various sources, with the ocean as the largest source, while the remaining area is land, occupied by about 7.6 billion people.

2019年1月15日 · Earth is unique among the planets of our solar system; its particular conditions have given rise to all sorts of life, including millions of plant and animal species. The planet is incredibly diverse—it has tall mountains and deep valleys, humid forests and arid deserts, warm climates and cold. Its 195 countries are home to over 7.5 billion people.

2017年6月7日 · Earth (from Template:Lang-ang; Greek: Γαῖα Gaia; Template:Lang-la), otherwise known as the World (especially in geopolitics and geography), or the Globe, is the third planet from the Sun and the only object in the Universe known to harbor life. It is the densest planet in the Solar System and the largest of the four terrestrial planets.

Describe Earth as a planetary body. Explain the various motions of Earth and the results of those motions. Compare continental and oceanic features on the surface of the Earth. Describe the three major types of rock features and how the rock cycle describes their creation.