- Millard Fillmore (January 7, 1800 – March 8, 1874) was the 13th president of the United States, serving from 1850 to 1853, and was the last president to have been a member of the Whig Party while in office. A former member of the U.S. House of Representatives, Fillmore was elected the 12th vice president in 1848, and succeeded to the presidency when Zachary Taylor died in July 1850. Fillmore was instrumental in passing the Compromise of 1850, which led to a brief truce in the battle over the expansion of slavery.
- 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.