Geoffrey Burbidge British astronomer Fred Hoyle, he and his wife were co-authors of "Synthesis of the Elements in Stars", a fundamental paper on stellar nucleosynthesis published in 1957. It is commonly referred to as the BFH paper after the initials of the surnames of the four authors. This paper describes the process of stars burning lighter elements into successively heavier atoms which then are expelled to form other structures in the universe, including other stars and planets. In recent years Burbidge was known mostly for his alternative cosmology "quasi-steady state theory", which contradicts the Big Bang theory. According to Burbidge, the universe
The Big Bang Theory (season 9) The Big Bang Theory (season 9) The ninth season of the American sitcom "The Big Bang Theory" started airing on CBS on Monday, September 21, 2015. It returned to its regular Thursday time slot on November 5, 2015 for the season's seventh episode. It concluded on May 12, 2016. On March 12, 2014, "The Big Bang Theory" was renewed for an additional three years, extending it through the 2016–17 season for a total of ten seasons. Laura Spencer was upgraded to the main cast during the season as Dr. Emily Sweeney, after being a recurring cast member for two seasons.