In Depth | Eris – NASA Solar System Exploration
With a radius of about 722 miles (1,163 kilometers), Eris is about 1/5 the radius of Earth. Eris, like Pluto, is a little smaller than Earth's Moon. If the Earth were the size of a nickel, Eris would be about as big as a popcorn kernel.
Planet Compare - NASA Solar System Exploration
Jan 9, 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.
In Depth | Haumea – NASA Solar System Exploration
The other known dwarf planets in the Kuiper Belt are Pluto, Eris, and Makemake (dwarf planet Ceres is located in the main asteroid belt between Mars and Jupiter). Haumea is roughly the same size as Pluto. It is one of the fastest rotating large objects in our solar system.
Europa By the Numbers – NASA Solar System Exploration
May 16, 2024 · Europa is one of the largest of Jupiter’s more than 90 moons. It's the sixth-closest moon to the planet.
Jupiter By the Numbers – NASA Solar System Exploration
May 7, 2024 · 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.
New Names and Insights at Ceres - NASA Solar System Exploration
Jul 28, 2015 · Colorful new maps of Ceres, based on data from NASA's Dawn spacecraft, showcase a diverse topography, with height differences between crater bottoms and mountain peaks as great as 9 miles (15 kilometers).
Search Results - 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.
The Sun By the Numbers – NASA Solar System Exploration
Jan 9, 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 – in its orbit.
Pluto By the Numbers – NASA Solar System Exploration
May 16, 2024 · Eris. Solar System Home; Explore This Section. Pluto By the Numbers Pluto. vs. Units of Measure: SIZE COMPARISON. Earth. Pluto. Pluto is 5.5x smaller than Earth. DATE OF DISCOVERY ... EQUATORIAL RADIUS. The distance from the center of an object to its equator. 1,151 km. 715.2 miles. 1.151 x 10 3 km. 6,371.00 km. 3,958.8 miles. 6.3710 x 10 3 km.
In Depth | Ganymede – NASA Solar System Exploration
Ganymede has a radius of 1,635 miles (2,631 kilometers) and is the largest moon in our solar system. It’s bigger than Mercury and Pluto. Ganymede is about 665,000 miles (1.07 million kilometers) from Jupiter, which orbits about 484 million miles (778 million kilometers) from the Sun. Jupiter is 5.2 astronomical units away from the Sun. One ...