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Symposium04
Symposium04
halfanhour,
Sitinthefirsthalf-personhighwoodenhighchairtotheleftofthepodium,
Doriswearingasmartnanomembranefacemask,
Getupandwalkslowlytothefrontofthepodium,
atthistime,
Ninalookedatthetransparentwoodenrimlesssmartglasses,
Sayslowly:Isthereavarietyofalienlifeinthesolarsystem?
Dorislookedatthetransparentwoodenrimlesssmartglasses,andsaidslowly:
After3.8billionyearsofevolution,
Nowtherearemanyformsoflifeonearth,manyspecies,
However,eventhesimplestlifeonearthstillhasrequirementsfortheenvironment,
Forexample,theyneedwater,organicmaterialsandenergy,
Withoutanyonefactor,theymaynotsurvive,
Withcontinuousexploration,wehavelearnedmoreabouttheearthandotherplanets,
halfanhour,
Ninalookedatthetransparentwoodenrimlesssmartglasses,
Slowlysay:Whyislifeamiracleoftheuniverse?
Dorislookedatthetransparentwoodenrimlesssmartglasses,andsaidslowly:
Becauseoftheprocessoflifegenerationandevolution,therearemanyspecialconditions,
Ifanyoftheseconditionsaremissing,
Thenlifewouldnotbeabletoariseorevolvetothelevelitistoday,
Thesunissuitablefortheexistenceoflife,
Ifitsmassistoolarge,itwillburntoofasttowaitforlifetoappear,
Earth'sorbitisappropriate,itmakesthetemperatureonEarthjustrightforlifetoexist,
IfEarthwereintheorbitofVenusorMars,itwouldbetoohotortoocoldforlifetoexist,
ThesunhasacompanionstarcalledNemesis,
Every26millionyearsorso,itcollideswiththeOortcloudregionattheedgeofthesolarsystem,
ThisnumberisveryclosetothecycleofmassextinctionsonEarth,
MassextinctionsonEarthseemtohappenevery20to40millionyears,
CometsfromaliengalaxiesarethemaincauseofextinctiononEarth,
Thesolarsystemwillbebombardedbysuchcomets,
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