id	keyword
american_scientific_journal-9124	stars
american_scientific_journal-9124	mass
american_scientific_journal-9124	high
american_scientific_journal-9124	mass stars
american_scientific_journal-9124	fusion
american_scientific_journal-9124	hole
american_scientific_journal-9124	energy
american_scientific_journal-9124	fabric
american_scientific_journal-9124	dark
american_scientific_journal-9124	temperature
american_scientific_journal-9124	neutron
american_scientific_journal-9124	supergiant
american_scientific_journal-9124	sun
american_scientific_journal-9124	core