Big Bang is a past horizon, though in practice our view is also limited by the opacity of the universe at early times. So our view cannot extend further backward in time, though the horizon recedes in space. If the expansion of the universe continues to accelerate, there is a future horizon as well. English astronomer Fred Hoyle is credited with coining the term "Big Bang" during a 1949 BBC radio broadcast, saying: "These theories were based on the hypothesis that all the matter in the universe was created in one big bang at a particular time in the remote past." It
The Big Bang Theory (season 3) still annoy him). Wil Wheaton begins appearing as Sheldon's arch-enemy. Howard begins to date Bernadette Rostenkowski. At the end of the season, Sheldon meets Amy Farrah Fowler. <onlyinclude> </onlyinclude> The third season received favorable reviews. Maureen Ryan of "Chicago Tribune" wrote that ""Big Bang Theory," which is in its third season, is doing many things very right", Alan Sepinwall of "The Star-Ledger" wrote "the Penny/Sheldon interaction was gold, as always", and Ken Tucker of "Entertainment Weekly", who wrote that "what lifts "The Big Bang Theory" into frequent excellence is its one constant from the start: the brilliantly nuanced performance of