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Marble is a Virtual Globe and World Atlas that you can use to learn more about Earth: You can pan and zoom around and you can look up places and roads.

This program is designed to match up items in two different lists, which may have two different systems of coordinates. The program allows the two sets of coordinates to be related by a linear, quadratic, or cubic transformation. There was a major change in version 0.15: the first stage uses the clever method of finding the most likely triangles described in Tabur, Publications of the Astronomical Society of Australia, vol 24 , page 189 (2007). This replaces the more brute-force-ish method of Valdes et al., Publications of the Astronomical Society of the Pacific, vol 107, page 1119 (1995), which was employed in version up to 0.14. The program was designed and written to work on lists of stars and other astronomical objects, but it might be applied to other types of data. In order to match two lists of N points, the main algorithm calls for O(N^6) operations (yes, that's N-to-the-sixth), so it's not the most efficient choice. I find myself becoming impatient for N >= 100, but your mileage may vary. On the other hand, it does allow for arbitrary translation, rotation, and scaling...

The module is an object orientated interface to the both the first and second Digital Sky Surveys at the ESO-ECF online archive. While the first sky survey is 100% complete, the second survey covers 98% of the sky in Red, 45% of the sky in Blue and 27% of the sky in the Infra-red.

The Astro::SIMBAD module is an objected orientated Perl interface to the SIMBAD astronomical database. SIMBAD provides basic data, cross-identifications and bibliography for astronomical objects outside the solar system.

Use QMapShack to plan your next outdoor trip or to visualize and archive all the GPS recordings of your past exciting adventures. QMapShack is the next generation of the famous QLandkarte GT application. And of course it's even better and easier to use.

The SWISS EPHEMERIS is the high precision ephemeris developed by Astrodienst, largely based upon the DE406 ephemeris from NASA's JPL. Developers can license the Ephemeris library.Ephemeris users find 3200 years of read-made printable files of ephemerides, containing 19'200 print pages in PDF quality. The Swiss Ephemeris is available under a dual licensing model: GPL2 or Swiss Ephemeris Professional License.

This command-line utility is intended to provide quick access to current weather conditions and forecasts. Presently, it is capable of returning data for localities throughout the USA by retrieving and formatting decoded METARs (Meteorological Aerodrome Reports) from NOAA (the USA National Oceanic and Atmospheric Administration) and forecasts from NWS (the USA National Weather Service). The tool is written to function in the same spirit as other command- line informational utilities like cal(1), calendar(1) and dict(1). It can retrieve arbitrary weather data via specific command-line switches (station ID, city, state), or aliases can be configured system wide and on a per-user basis. It can be freely used and redistributed under the terms of a BSD-like License.

This dockapp shows you the actual distance of Jupiter in astronomical units (AE) and when the red spot crosses (which is a weather feature on Jupiter). The four Galileo Moons are displayed too but only when they are near the planet (Io, Europa, Ganymede, and Callisto). The position of the red spot changes on the surface so you need to change that value within few months or so. The current position can be found on the Internet. It was 80 deg. as of 11th Jan 2002.

It shows you the solar system viewed from top (90 heliocentric). The objects have the following colors: Sun - yellow Mercury - green Venus - white Earth - cyan Mars - red Jupiter - gray Saturn - green Uranus - pink Neptune - cyan Pluto is not included since it's way "off course" A left click on the window changes the view between inner and outer planets. A left click on the date increases the day/month/year. A right click on the date does the opposite. Click the right mouse button on the solar system to reset the date to the current date (which is in Universal Time).

Displays a rendered view of the earth in your root window, similar to xearth, but instead uses a satellite image map of the earth. You can also substitute surface maps of other planets if you're feeling cosmic.