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
Banu Nadir As a result, Muhammad went to the Nadir, asking them to make a contribution towards the blood money of two men killed. Initially most of the Nadir, except Huyayy ibn Akhtab, were inclined to accept Muhammad's request. However, Ibn Ubayy communicated to ibn Akhtab of his intent, along with allied nomads, to attack Muhammad. The Nadir, then postponed the contribution until later that day. Muhammad left the locality immediately accusing the Banu Nadir of plotting to assassinate him, saying to have learned this either through revelation or Muhammad ibn Maslama. According to other sources, the Banu Nadir invited Muhammad to