ASTEROIDS, COMETS & METEORS - NASA SOLAR SYSTEM EXPLORATION
Asteroids and comets – and the meteors that sometimes come from them – are leftovers from the formation of our solar system 4.6 billion years ago. From solarsystem.nasa.gov
Jun 5, 2025 NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system. From solarsystem.nasa.gov
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 … From solarsystem.nasa.gov
IN DEPTH | EARTH'S MOON – NASA SOLAR SYSTEM EXPLORATION
The brightest and largest object in our night sky, the Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also … From solarsystem.nasa.gov
MARS BY THE NUMBERS - NASA SOLAR SYSTEM EXPLORATION
Jun 5, 2025 Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots. From solarsystem.nasa.gov
THE SUN BY THE NUMBERS - NASA SOLAR SYSTEM EXPLORATION
Jun 5, 2025 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 – … From solarsystem.nasa.gov
Jun 5, 2025 NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system. From solarsystem.nasa.gov
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 … From solarsystem.nasa.gov
NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system. From solarsystem.nasa.gov
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