<http://schema.org/alternativeHeadline>
"The amount of gold that was created from massive neutron stars 'may have been as large as 10 moon masses' according to researchers."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/earths-gold-may-come-from-collisions-of-dead-stars>