More recently, the astrophysicists Fred Adams and Gregory Laughlin have divided the past and future history of an expanding universe into five eras.
John Adams | Fred Astaire | Bryan Adams | Douglas Adams | John Quincy Adams | Fred Frith | Fred Quimby | Ansel Adams | Fred Thompson | Fred Beckey | Ryan Adams | Fred MacMurray | Adams | Fred Willard | Adams County | Yolanda Adams | Gerry Adams | Amy Adams | John Adams (composer) | Fred Hersch | Fred | Scott Adams | Patch Adams | Fred Seibert | Fred R. Harris | Fred Olen Ray | Fred Neil | Fred Hoyle | Fred Flintstone | Fred Couples |