Pasi rinofungidzirwa kuti rakaumbwa makore 4.54 bhiriyoni apfuura kubva kune solar nebula, pamwe chete neZuva nemamwe mapuraneti. Mwedzi wakaumbwa makore anenge mamirioni makumi maviri gare gare. Pakutanga yakanyunguduka, chikamu chekunze chePasi chakatonhora, zvichikonzera kuoma kweganda. Outgassing uye chiitiko chemakomo chakaburitsa mhepo yepasi. Mhepo yemvura yakanyunguduka, yakawanda kana yese yakabva muchando chakapihwa nemakometi, yakaburitsa makungwa nemamwe masosi emvura.
nebula yezuva