Nadir is employed during remote sensing of the atmosphere, as well as when an astronaut faces the Earth while performing a spacewalk. The term nadir can also be used to represent the lowest point reached by a celestial body during its apparent orbit around a given point of observation. This can be used to describe the location of the Sun, but it is only technically accurate for one latitude at a time and only possible at the low latitudes. The sun is said to be at the nadir at a location when it is at the zenith at the location's antipode
To the Point carrier stations to play syndicated news headlines, typically provided by NPR. In the opening segment, Olney discusses a recent or breaking news development with a guest, typically a newspaper journalist. The journalist joins Warren by phone, and the segment lasts about 10 minutes. The following segment, which occupies most of the show, features a roundtable discussion of a topic of national or international interest, including issues of politics, policy, war, and science. Unlike most news programs, which tend to interview newsmakers, "To the Point" instead interviews "experts" – typically think tank members, professors in related fields, or observers from non-profit