In the Solar System
Venus
Nearly the Earth's twin in size and mass, and nothing like it anywhere else. A carbon-dioxide atmosphere ninety times the pressure of ours holds the surface at about 465 °C - hotter than Mercury's, and the same all over, day side and night - under permanent cloud of sulphuric acid. It turns backwards, and so slowly that its day is longer than its year.
- Radius
- 6,052 km
- Turns once in
- 243 d (backwards)
Everything the map shows is worked out in your browser from published orbital data - nothing on it is a stored picture of where things were.