History
John L. Schmitt first noticed the peculiar nature of BL Lac in 1968 when he matched it with a radio object, VRO 42.22.01.
Within a year others observed that the radio flux varied, and that light was polarized. Strittmatter proposed the class of object in 1972 and added four objects. By 1976 there were 30 known objects.
Read more about this topic: BL Lac Object
Famous quotes containing the word history:
“If you look at history you’ll find that no state has been so plagued by its rulers as when power has fallen into the hands of some dabbler in philosophy or literary addict.”
—Desiderius Erasmus (c. 1466–1536)
“There is no history of how bad became better.”
—Henry David Thoreau (1817–1862)
“History is the present. That’s why every generation writes it anew. But what most people think of as history is its end product, myth.”
—E.L. (Edgar Lawrence)