Could the gold on Earth have any connection with neutron stars?
A) No. Neutron stars do not eject any significant amount of material into the Galaxy.
B) Yes. Some of the gold was created in collisions between neutron stars in binary systems.
C) No. Some of the hydrogen in Earth's water may have been ejected from neutron stars as high-energy protons, but all heavy elements come from supernova explosions of normal stars.
D) Yes. The neutrons in the gold nuclei were very likely ejected from individual neutron stars.
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