Solar System Planets
Our solar system is home to 8 planets and one notable dwarf planet. From the scorching surface of Mercury to the frozen plains of Pluto, each world is unique. Click any planet to explore its data, moons, and missions.
Terrestrial Planets
Rocky worlds with solid surfaces
Mercury
The smallest planet and closest to the Sun, with extreme temperature swings and a heavily cratered surface.
4,879 km
Diameter
0.387 AU
From Sun
0
Moons
167°C
Avg Temp
Venus
Earth's scorching twin with a runaway greenhouse effect, retrograde rotation, and surface temperatures hot enough to melt lead.
12,104 km
Diameter
0.723 AU
From Sun
0
Moons
462°C
Avg Temp
Earth
The Blue Planet -- the only known world with liquid water oceans and life, third from the Sun.
12,742 km
Diameter
1 AU
From Sun
1
Moons
15°C
Avg Temp
Mars
The Red Planet, home to the solar system's tallest volcano and a prime target for human exploration.
6,779 km
Diameter
1.524 AU
From Sun
2
Moons
-65°C
Avg Temp
Gas Giants
Massive planets composed primarily of hydrogen and helium
Jupiter
The largest planet in the solar system, a massive gas giant with the iconic Great Red Spot and at least 95 moons.
139,820 km
Diameter
5.203 AU
From Sun
95
Moons
-110°C
Avg Temp
Saturn
The ringed planet, known for its spectacular ring system, low density, and 146 moons including Titan.
116,460 km
Diameter
9.537 AU
From Sun
146
Moons
-140°C
Avg Temp
Ice Giants
Cold worlds with mantles of water, ammonia, and methane ices
Uranus
A pale blue ice giant tilted on its side at nearly 98 degrees, with faint rings and 28 known moons.
50,724 km
Diameter
19.189 AU
From Sun
28
Moons
-220°C
Avg Temp
Neptune
The windiest planet, a deep blue ice giant with supersonic winds and the captured moon Triton.
49,528 km
Diameter
30.07 AU
From Sun
16
Moons
-214°C
Avg Temp
Dwarf Planets
Small worlds in the outer reaches of the solar system
