Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets. Get the Facts An artist’s concept of our solar …

2025年1月22日 · 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. Just slightly larger than nearby Venus, Earth is the biggest of the four planets closest to the Sun, all of which are made of rock and metal.

3 天之前 · NASA's Earth Information Center allows visitors to see how our planet is changing in six key areas: sea level rise and coastal impacts, health and air quality, wildfires, greenhouse gases, sustainable energy, and agriculture.

2024年11月21日 · From the center of the solar system, rages a powerful wind. Sent by the Sun, this wind whips at speeds exceeding one million miles per hour as it traverses to the edge of interstellar space bathing everything in its path. This is the solar wind.

2016年3月15日 · Our solar system is made up of a star—the Sun—eight planets, 146 moons, a bunch of comets, asteroids and space rocks, ice, and several dwarf planets, such as Pluto. The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

2024年11月5日 · Our Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million kilometers) from Earth and it’s our solar system’s only star. Without the Sun’s energy, life as we know it could not exist on our home planet.

2019年9月6日 · The Sun powers life on Earth; it helps keep the planet warm enough for us to survive. It also influences Earth’s climate: We know subtle changes in Earth’s orbit around the Sun are responsible for the comings and goings of the past ice ages.

2024年11月2日 · When directed toward Earth, a solar storm can create a major disturbance in Earth’s magnetic field, called a geomagnetic storm, that can produce effects such as radio blackouts, power outages, and beautiful auroras. They do not cause direct harm to anyone on Earth, however, as our planet’s magnetic field and atmosphere protect us from the ...

2024年3月29日 · Earth is the fifth largest planet in the solar system. It has an equatorial diameter of about 7,926 miles (12,756 kilometers). Earth is the third planet from the Sun, orbiting at an average distance of 93 million miles (149.7 million kilometers).

2018年6月29日 · This photograph of the eclipse of the Sun was taken with a 16mm motion picture camera from the Apollo 12 spacecraft during its trans-Earth journey home from the Moon. The fascinating view was created when the Earth moved directly between the Sun and the Apollo 12 …