id	keyword
american_scientific_journal-8308	star
american_scientific_journal-8308	mass
american_scientific_journal-8308	fabric
american_scientific_journal-8308	dwarf
american_scientific_journal-8308	sun
american_scientific_journal-8308	dark
american_scientific_journal-8308	energy
american_scientific_journal-8308	fusion
american_scientific_journal-8308	universe
american_scientific_journal-8308	mass stars
american_scientific_journal-8308	light
american_scientific_journal-8308	pressure
american_scientific_journal-8308	nebula
american_scientific_journal-8308	evolution
american_scientific_journal-8308	hydrogen
american_scientific_journal-8308	matter