inner planet
Rocky solar neighbor
An inner planet is one of the four planets in our solar system that orbit closest to the sun—Mercury, Venus, Earth, and Mars.
These are rocky, terrestrial planets, distinguished from the outer planets (Jupiter, Saturn, Uranus, Neptune), which are gas giants.
The asteroid belt marks the rough boundary between them.
Messenger god or planet
proximity · perihelion · aphelion · elliptical · revolution · solar system · asteroid belt · gravitational pull
Love goddess, or planet
- EarthOur world
- MarsRed planet, war deity
- greenhouse effectAtmospheric heat retention mechanism
- carbon dioxideRespiration byproduct, photosynthesis fuel
nitrogen · thin atmosphere · atmospheric pressure · climate · temperature · habitable zone · weather · clouds
Mercury
Messenger god or planet
orbit · proximity · perihelion · aphelion · elliptical · revolution · solar system · asteroid belt · gravitational pull · ecliptic
Venus
Love goddess, or planet
- EarthOur world
- MarsRed planet, war deity
- greenhouse effectAtmospheric heat retention mechanism
carbon dioxide · nitrogen · thin atmosphere · atmospheric pressure · climate · temperature · habitable zone · weather · clouds · sulfuric acid
terrestrial
Relating to land
- solid surfaceTangible, unyielding plane
- silicateOxygen-bound crystal compound
- crustHard outer layer
mantle · density · geology · tectonics · volcanism · basalt · iron · regolith · cratered · differentiation
NASA
Federal space exploration bureau
Magellan · Perseverance · lander · orbiter · probe · spacecraft · mission · mapping · flyby · MESSENGER
- planetsEarth, Mars, Jupiter, Saturn, Venus
- solar systemsun, Earth, Mars, Jupiter, Saturn
- MarsMars surface, Martian soil, Martian atmosphere, Olympus Mons, polar caps