- Dick Cheney (Wikipedia)
Richard Bruce Cheney (/ˈtʃeɪni/ CHAY-nee; born January 30, 1941) is an American retired politician and businessman who served as the 46th vice president of the United States from 2001 to 2009 under President George W. Bush. He has been called the most powerful vice president in American history. Cheney previously served as White House Chief of Staff for President Gerald Ford, the U.S. representative for Wyoming’s at-large congressional district from 1979 to 1989, and as the 17th United States secretary of defense in the administration of President George H. W. Bush. He is the oldest living former U.S. vice president, following the death of Walter Mondale in 2021.
- Absolute magnitude (Wikipedia)
In astronomy, absolute magnitude (M) is a measure of the luminosity of a celestial object on an inverse logarithmic astronomical magnitude scale. An object’s absolute magnitude is defined to be equal to the apparent magnitude that the object would have if it were viewed from a distance of exactly 10 parsecs (32.6 light-years), without extinction (or dimming) of its light due to absorption by interstellar matter and cosmic dust. By hypothetically placing all objects at a standard reference distance from the observer, their luminosities can be directly compared among each other on a magnitude scale. For Solar System bodies that shine in reflected light, a different definition of absolute magnitude (H) is used, based on a standard reference distance of one astronomical unit.