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- 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 Without the Sun’s energy, life as we know it could not exist on our home planet
- The Sun By the Numbers - NASA Solar System Exploration
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
- 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
- Planet Compare - NASA Solar System Exploration
NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
- RPS 3D Viewer - NASA Solar System Exploration
NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
- Kuiper Belt and Oort Cloud - NASA Solar System Exploration
42 AU from the Sun — the first time a Kuiper Belt object (or KBO for short) had been sighted (One astronomical unit, or AU, is the mean distance of Earth from the Sun: about 150 million kilome-ters or 93 million miles ) More than 1,300 KBOs have been iden-tified since 1992 They are sometimes called Edgeworth–Kuiper
- Mars By the Numbers – NASA Solar System Exploration
Mars is the fourth planet from the Sun, and the seventh largest It’s the only planet we know of inhabited entirely by robots
- In Depth | Asteroids - NASA Solar System Exploration
Most of this ancient space rubble can be found orbiting our Sun between Mars and Jupiter within the main asteroid belt Asteroids range in size from Vesta – the largest at about 329 miles (530 kilometers) in diameter – to bodies that are less than 33 feet (10 meters) across
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