Sur le calcul des perturbations de la comète de Halley

by Pontécoulant, Philippe Gustave Le Doulcet, comte de

A history of Halley's comet

by G. de Pontécoulant

Notice sur la comète de Halley et son retour en 1835

by G. de Pontécoulant, Alexis Bouvard

Grands Astronomes

by Robert S. Ball

Comet

by Carl Sagan, Ann Druyan

These are the snows of yesteryear, the pristine remmants of the origin of the solar system, waiting frozen in the inters...

A natural history of time

by Pascal Richet

Perhaps for its malleability, that humble clay we find sticking to our feet on moist pathways has always had a prodigiou...