Voyager 2 - NASA Science
Interstellar Messenger| NASA Science
Our solar system has eight planets, and five dwarf planets - all located in an outer spiral arm of the Milky Way galaxy called the Orion Arm.| NASA Science
The Kuiper Belt is a doughnut-shaped region of icy objects beyond the orbit of Neptune. It is home to Pluto and most of the known dwarf planets and some comets.| NASA Science
Asteroids, comets, and meteors are chunks of rock, ice, and metal left over from the formation of our solar system about 4.6 billion years ago.| NASA Science
New Horizons was the first spacecraft to explore Pluto and its five moons up close and, later, made the first close exploration of a Kuiper Belt Object.| NASA Science
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.| NASA Science
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.| NASA Science
