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  • In Depth | Sun – NASA Solar System Exploration
    In Depth 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
    The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy 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 Beyond our own solar system, there
  • In Depth | Earths Moon – NASA Solar System Exploration
    Because Earth is moving as well – rotating on its axis as it orbits the Sun – from our perspective, the Moon appears to orbit us every 29 days Structure Earth's Moon has a core, mantle, and crust The Moon’s core is proportionally smaller than other terrestrial bodies' cores
  • 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
  • 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
  • Sun 3D Model – NASA Solar System Exploration
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  • In Depth | Kuiper Belt – NASA Solar System Exploration
    Size and Distance The Kuiper Belt is one of the largest structures in our solar system – others being the Oort Cloud, the heliosphere, and the magnetosphere of Jupiter Its overall shape is like a puffed-up disk or donut Its inner edge begins at the orbit of Neptune, at about 30 AU from the Sun (1 AU, or astronomical unit, is the distance from Earth to the Sun ) The inner, main region of
  • Jupiter - NASA Solar System Exploration
    Jupiter is the fifth planet from the Sun, and the largest in the solar system – more than twice as massive as the other planets combined
  • In Depth | Titan – NASA Solar System Exploration
    Titan’s atmospheric nitrogen ratio suggests the moon’s building blocks formed early in the solar system's history, in the same cold disk of gas and dust that formed the Sun (called the protosolar nebula), rather than forming in the warmer disk of material that Saturn later formed from (called the Saturn sub-nebula) Surface





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