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...the [[formation and evolution of the Solar System]]. It was first proposed in 1734 by [[Emanuel Swedenborg]].<ref name=Swedenborg1734/> Originally applie ...rotoplanetary disk]] around the young star. This may give birth to planets in certain circumstances, which are not well known. Thus the formation of plan ...

...]] itself is expanding, carrying [[galaxy|galaxies]] with it, like raisins in a rising loaf of bread. The graphic scheme above is an artist's concept ill ...hot and dense initial condition at some finite [[cosmological time|time]] in the past, and continues to [[metric expansion of space|expand]] to this day ...

...of the implications of the topic began with a paper by [[Michael H. Hart]] in 1975, and it is sometimes referred to as the '''Fermi-Hart paradox'''.<ref> ...questions that relate to it have been addressed in fields as diverse as [[astronomy]], [[biology]], [[ecology]], and [[philosophy]]. The emerging field of [[as ...