In Depth | Sun – NASA Solar System Exploration
The 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.
In Depth | Our Solar System - NASA Solar System Exploration
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 By the Numbers – NASA Solar System Exploration
2025年1月9日 · 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.
RPS 3D Viewer - NASA Solar System Exploration
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.
About Us - NASA Solar System Exploration
2025年1月9日 · We provide the public with reliable, accurate, up-to-date information about the planets, moons, asteroids, comets and everything else in our solar system. We also provide a complete historical record of deep space exploration.
Saturn By the Numbers – NASA Solar System Exploration
2025年1月9日 · Saturn is the sixth planet from the Sun, and the second largest in the solar system. It’s surrounded by beautiful rings.
from early in the history of the solar system. Most of the evidence that scientists have been gathering for the last 50 years about the sun and the planets is related to the chemical composition of these objects.
10 Things, June 12: NASA's First Mission to Touch the Sun
2017年6月12日 · Parker Solar Probe, NASA's first mission to go to the sun, is named after Eugene Parker, an American astrophysicist who first theorized that the sun constantly sends out a flow of particles and energy called the solar wind.
In Depth | Mercury – NASA Solar System Exploration
The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth's Moon. From the surface of Mercury, the Sun would appear more than three times as large as it does when viewed from Earth, and the sunlight would be as much as seven times brighter.
Flybys | Saturn Tour – NASA Solar System Exploration
They focus on our star, but three of NASA’s Sun-watching spacecraft have also captured unique views of the planets. Unique Solar System Views from Sun-Watching Spacecraft Jupiter, left, and Saturn, right, above Chapel Hill, North Carolina, during the “great conjunction.”