In one instance, Kepler, expanding on Gilbert's speculation, described the sun as a huge magnet, whose rotation on its axis caused the earth and planets (themselves smaller magnets) to move around it in orbits.
(Kepler; described; the sun; as a huge magnet; L:In one instance) Context(Kepler described,List([17, 70))):(Kepler; described the sun expanding; on Gilbert's speculation) (a huge magnet; caused; the earth and planets (themselves smaller magnets) to move around it in orbits) Context(a huge magnet caused,List([82, 130))):(the earth and planets; to move; around it)
Kepler described,List([17, 70)) a huge magnet caused,List([82, 130))
Kepler Kepler a huge magnet the earth and planets
described described the sun expanding caused to move
the sun as a huge magnet L:In one instance
on Gilbert's speculation
the earth and planets (themselves smaller magnets) to move around it in orbits
around it