Venus is a terrestrial meteor.
A terrestrial planet , telluric planet , or rocky planet is a planet that is composed primarily of silicate rocks or metals . Venus is the second planet from the Sun , orbiting it every 224.7 Earth days . It has the longest rotation period ( 243 days ) of any planet in the Solar System and rotates in the opposite direction to most other planets . It has the densest atmosphere of the four terrestrial planets , consisting of more than 96 % carbon dioxide .