Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.

The Sun orbits the center of the Milky Way, bringing with it the planets, asteroids, comets, and other objects in our solar system. Our solar system is moving with an average velocity of 450,000 miles per hour (720,000 kilometers per hour).

2025年1月9日 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

2023年9月25日 · Here's how solar eclipses can impact the ionospheric structure and dynamics: Ionization Changes : In the ionosphere, solar radiation is a primary source of ionization, which the process in which an atom or molecule becomes charged when it gains or loses electrons.

2006年2月28日 · Does Titan's methane originate from underground? March 1, 2006 (Source: ESA) Data from ESA's Huygens probe have been used to validate a new model of the evolution of Titan, Saturn's largest moon, showing that its methane supply may be locked away in a kind of methane-rich ice.

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

How Does Studying the Solar Wind Tell Us About the Origin of Planets? Most scientists believe our solar system was formed 4.6 billion years ago with the gravitational collapse of the solar nebula, a cloud of interstellar gas, dust, and ice created from previous generations of stars.

2025年1月9日 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

2023年9月18日 · Participants will collect multisensory observations and recorded sounds from the 2023 annular solar eclipse and the 2024 total solar eclipse. That data will help scientists understand the impact of solar eclipses on various U.S. ecosystems.