Science

Month at-a-glance, what's up, planet watch, phases and encounters sun watch, and star maps and charts.

Daily weather averages and astronomical information.

A calendar of celestial events by the appropriate month.

Provides updated weekly information about the night sky, including specific planetary locations and details on the most important asteroids, comets, and meteor showers.

Program that when given a particular date generates information, the Julian date, sun rise and set times, moon rise and set times, and percent illumination.

The sky at a glance, highlights, sky chart, and gallery from Sky and Telescope Magazine.

Graphical short-term predictions of seeing related weather conditions at a large number of sites in North America.

Monthly events customizable for different locations.