2025年2月20日 · The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.3 million asteroids, and about 3,900 comets.

2025年1月17日 · Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets. Our solar system is located in the Milky Way, a barred spiral galaxy with two major arms, and two minor arms.

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.

2025年2月3日 · The Sun. The Sun is the star at the heart of our solar system. Its gravity holds the solar system together, keeping everything — from the biggest planets to the smallest bits of debris — in its orbit.

2025年2月18日 · The agency's science missions extend our human senses deep into space, from Earth's Moon to planet Mars, from our star to distant stars and galaxies, from our own planet to exoplanets orbiting other suns.

2024年3月29日 · What is the order of the planets as we move out from the Sun? This is a simple guide to the sizes of planets based on the equatorial diameter – or width – at the equator of each planet. Each planet’s width is compared to Earth’s equatorial diameter, which is about 7,926 miles (12,756 kilometers).

2025年2月13日 · The Sun doesn’t have moons, but it’s orbited by eight planets, at least five dwarf planets, tens of thousands of asteroids, and perhaps three trillion comets and icy bodies. Several spacecraft are currently investigating the Sun including Parker Solar Probe, STEREO, Solar Orbiter, SOHO, Solar Dynamics Observatory, Hinode, IRIS, and Wind.

2025年1月22日 · Upon completion of this chapter, you will be able to classify objects within the solar system, state their distances of in terms of light-time, describe the Sun as a typical star, relate its share of the mass within the solar system, and compare the …

2025年2月7日 · The Moon rotates exactly once each time it orbits our planet. Observers on Earth can track the Moon's motion in space (relative to Earth and the Sun) through moon phases, supermoons and eclipses.

2024年10月22日 · Our solar system consists of the Sun, whose gravity keeps everything from flying apart, eight planets, hundreds of moons, and billions of smaller bodies – from comets and asteroids to meteoroids and tiny bits of ice and rock.