astronomy public under natural-science 74 List Picture As a command %3 n0 astronomy n2 astrophysics n0->n2 n3 celestial-mechanics n0->n3 n4 observational-astronomy n0->n4 n5 amateur-astronomy n0->n5 n6 astrobiology n0->n6 n7 astrometry n0->n7 n8 planetary-science n0->n8 n9 selenology n0->n9 n10 solar-physics n0->n10 n1 natural-science n1->n0