Physical Science

This site provides information for locating the planets, comets, meteor showers, constellations, and other selected objects for the current month. Includes moon phase chart, constellation of the month, monthly star charts, etc. Updated monthly.

This tool produces a nightime calendar of phenomena for a single site. The listing includes sun rise and set times, astronomical twilights (both in civil time and LST), moon rise and set times and phase for each night in the month. All times are given for the local time, including daylight saving times when applicable.

The Astrophysics Data System (ADS) is a NASA-funded project whose main resource is an Abstract Service, which includes four sets of abstracts covering astronomy and astrophysics; instrumentation; physics and geophysics.

The USNO's web site features information on the positions and motions of celestial objects, computations based on observable characteristics of celestial objects, as well as current and predicted future orientation of the Earth in space. The library section has links to astronomy journals, some of which are full-text.

OneGeology's aim is to create a dynamic digital geological map data for the world. It is an international initiative of the geological surveys of the world.