en carl sagan
― field ⟶
Weight: 0.5
en astrophysics Source: DBPedia 2015
en carl sagan
― field ⟶
Weight: 0.5
en astrobiology Source: DBPedia 2015
en carl sagan
― field ⟶
Weight: 0.5
en astronomy Source: DBPedia 2015
en carl sagan
― field ⟶
Weight: 0.5
en planetary science Source: DBPedia 2015
en carl sagan
― field ⟶
Weight: 0.5
en cosmology Source: DBPedia 2015