In sites ranging from Hungary to China and Japan, scientists digging in layers of 250-million-year-old rock found scattered buckyballs that had trapped in their cagelike structure traces of extraterrestrial gases--helium and argon in a rare form that scientists know could have been forged only during star formation.
(sites; ranging; from Hungary; to China and Japan) (scientists; know; ) (a rare form that scientists know; could have been forged; T:only during star formation) (scientists digging in layers of 250-million-year-old rock; found; scattered buckyballs that had trapped in their cagelike structure traces of extraterrestrial gases--helium and argon in a rare form; L:In sites) Context(scientists digging in layers of 250 - million - year - old rock found,List([50, 113))):(scientists; digging; L:in layers of 250-million-year-old rock) (scattered buckyballs; had trapped; in their cagelike structure traces of extraterrestrial gases)
scientists digging in layers of 250 - million - year - old rock found,List([50, 113))
sites scientists a rare form that scientists know scientists digging in layers of 250-million-year-old rock scientists scattered buckyballs
ranging know could have been forged found digging had trapped
from Hungary to China and Japan
T:only during star formation
scattered buckyballs that had trapped in their cagelike structure traces of extraterrestrial gases--helium and argon in a rare form L:In sites
L:in layers of 250-million-year-old rock
in their cagelike structure traces of extraterrestrial gases