Pluto
Venus
Diameterkm
2,377
12,104
Mass (Earth = 1)x
0.00
0.81
Surface Gravitym/s²
0.62
8.87
Mean Temperature°C
-230
+462
Distance from SunAU
39.48
0.72
Orbital Perioddays
90,560
224.7
Day Lengthhours
153.29
2802.00
Known Moons
5
0
Axial Tilt°
122.53
177.36
Orbital Velocitykm/s
4.67
35.02
Quick Facts
Pluto
- -Pluto was reclassified from planet to dwarf planet in 2006 by the International Astronomical Union.
- -Pluto's largest moon Charon is so large (half Pluto's diameter) that they orbit a point between them, forming a binary system.
- -Pluto's famous heart-shaped feature, Sputnik Planitia, is a vast plain of nitrogen ice over 1,000 km across.
- -One year on Pluto takes 248 Earth years -- it hasn't completed a single orbit since its discovery in 1930.
Venus
- -Venus spins so slowly that its day (243 Earth days) is longer than its year (225 Earth days).
- -Venus is the hottest planet in the solar system at 462°C, despite Mercury being closer to the Sun.
- -Venus rotates in the opposite direction to most planets, so the Sun rises in the west and sets in the east.
- -The atmospheric pressure on Venus's surface is 92 times that of Earth -- like being 900 meters underwater.