Gradually
1311998 Pacific hurricane season — Infobox hurricane season Basin=EPac Year=1998 Track=1998 Pacific hurricane season map.png First storm formed=June 11, 1998 Last storm dissipated=October 20, 1998 Strongest storm name=Howard Strongest storm winds=130 Strongest storm pressure=932… …
132Formation and evolution of the Solar System — Artist s conception of a protoplanetary disk The formation and evolution of the Solar System is estimated to have begun 4.568 billion years ago with the gravitational collapse of a small part of a giant molecular cloud …
