“Iron Dwarf” for having a large iron core and being only 38% the size of Earth
Mercury
Composition: Iron Core, Silicate Surface
(Iron core is about the size of Earth’s moon)
Mercury
Hundreds of craters
Mercury
Second planet from the Sun
Venus
“Sister Planet” roughly the same size and mass as Earth’s
Venus
Clouds made of sulfuric acid
Venus
Lots of volcanic features, but not active.
Venus
Third planet from the Sun
Earth
78% Nitrogen, 21% Oxygen, 1% argon
Earth
One moon
Earth
Eighth planet from the Sun
Neptune
“Blue Colossus”
Five main rings
Neptune
Atmosphere: 79% Hydrogen, 18% Helium and 3% Methane
Neptune
Dynamic atmosphere with a main clouds of methane ice crystals.
Neptune
Composition: Hydrogen and other elements mixed into an icy liquid (outer mantle), slushy mixture rich in water, methane, and ammonia (inner mantle), and an icy & rocky (core)
Neptune
Orbit is almost perfectly circular
Neptune
Axial inclination of 97.8° (sideways compared to other planets)
Neptune
Little is known, but best guess is that 70% of the planet is rock and ice makes up the other 30% of the planet.
Pluto
67% of the diameter of the moon.
Elongated and inclined orbit different than the other planets