Earth lies at an average distance of 149.60 million kilometers (92.957 million miles) from the Sun and a complete orbit occurs every 365.256 days (1 sidereal year), during which time Earth travels 940 million kilometers (584 million miles). Earth's orbit has an eccentricity of 0.0167.
noun. 1  Ambient is defined as a state of being surrounded, usually in relation to the environment. 2  The definition of ambient is a restful environment usually including soft lighting or a type of soft music, often classical, which plays softly in the background. An example of ambient is the music piped into the streets during the Holidays.
the highest concentration of a specific air pollutant at a particular outdoor location, in a specified unit of time, that is not considered hazardous to humans: The ambient air standard for gas X is 3 parts per million per hour. Origin of ambient air standard. 1970-1975.