Paraules clau: Aquari, cometa, Edmund Halley, estrelles fugaces, Halley
Paraules clau: Copèrnic, Edmund Halley, espectrografia, Galileu, Isaac Newton, Kepler, telescopi
Paraules clau: cúmul obert, Edmund Halley, Híades, Ossa Major, Sírius, Toro
Paraules clau: Edmund Halley, Heinrich Olbers, Kepler, Sol, supernova