Tau Ceti e, renamed by Rocky as planet Adrian is an exoplanet orbiting the star Tau Ceti. He named it after his mate, and Ryland Grace chose Adrian as the human word equivalent. This is a reference to the character Rocky's girlfriend Adrian from the Rocky film series.
Adrian has an atmosphere of 91% Carbon Dioxide, 7% Methane, 1% Argon and some trace gases. It has a surface gravity of about 1.4gs, meaning a stable low-Adrian orbit is around 12 km per second. It is the homeworld of Astrophage, Taumoeba, and various other kinds of life. It is also presumably the origin of life on Earth and Erid, evidenced by the fact that all kinds of life seen in the book are made of cells.
From space, the planet appears green, a color Rocky calls "Medium-Rough" because of the appearance of the planet on his texture monitor when the camera is adjusted to the human visual spectrum.
Trivia[]
- The swirling green clouds suggest an appearance similar to the planet Jool from Kerbal Space Program. Andy Weir, being a fan of space travel and space exploration, has probably played the game and was inspired by the planet.