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Does NASA World Wind provide real time images?

The server sends imagery to its users by compressing it from gigabytes to many hundred megabytes. Even after the images are compressed to several hundred megabytes, the bandwidth needed for the server will be quite large. Even if this task is achieved somehow, the internet connection of most users is not that fast to update data every hour. However for MODIS, Global Clouds are frequently updated, hence they can be referred as real time images.

What is the problem with colors for new Landsat. Why isn't my area covered?

NASA World Wind is one of the few satellite programs that reveal regional, high resolution 3D pictures of elevation, vegetation, climate and places by population. On the internet, it has become a 'favorite download'. Using the zoom feature, you can easily get details of a particular destination. Have a closer look of your favorite place with NASA World Wind. The most important thing is that the software is available free of cost. This software application proved to be so popular that more than 100000 internet users willingly downloaded NASA World Wind in the first week of its release on the Web.

For those interested in knowing the various geographical features of our planet in depth should think of installing NASA World Wind. However, make sure that your machine has Windows operating system. The first version of this software was publicly released in 2004. Its latest version is version 1.4. This amazing program will surely leave you spellbound.

NASA World Wind software comes without paying a single penny. This program not only delivers accurate directions for locating places of interest but also gives more focus on natural and political aspects of planet Earth such as weather patterns, tectonic plates, borders, and topography.

NASA World Wind allows computer users to visit any location on Earth. You can fly over the Alps; see across the Andes or into the Grand Canyon. As the images are of high resolution, you will feel as if you are really visiting that place. Using NASA World Wind, you will be able to see Earth terrain in 3D environment.

Using this software, it is possible to zoom in from satellite altitudes into any city or globe on Earth. The program uses shuttle radar topography mission data and landsat satellite and several other data sources that give information on floods, fires, storms and many other major events. You can also get useful information on all important landmarks of the world.

This can be due to several reasons. They are listed below.

Really the server may be down. In such a case you really can try again in 2 minutes.

Then the second reason which may be associated with this is that some firewall or proxy may be causing interference in your connection with NASA World Wind. Reconfiguring a port or hunting down and distractive help can help resolve this issue.

Check whether you have installed .NET and DirectX.

Some countries block access to world wind download servers and sites. In such a case, you can try finding a proxy. However, such cases have not yet been reported with NASA World Wind.

While you are with NASA world wind, you may face several types of errors. Although these errors never harm the program, however it is essential to fix them as early as possible. One such error is JIT debugger error.

For getting more information about this JIT debugger error, you start NASA World Wind application right from the command line and then redirecting the standard error in a file. This file can provide you a full text of the .NET exception and stack trace. This is helpful for determining the reason for the problem.

Is NASA World Wind really free?

FSF does not have any trademark for the word free and free software. If the FSF want to license to be changed, they can approach the NOSA team.

None of the members among the developing team has complained that NOSA tries to limit their freedom.

What made NASA World Wind decide on C# and Direct X?

As NASA World Wind is an open source program; it encourages any OSX or GNU/ Linux programmers to start. On its part, it will attempt to its best, to provide all the resources it can for such effort. At this moment, there are some community resources at the porting World Wind.

Is it possible to extract data from WorldWind and use it for other modeling and mapping applications?

Yes it is possible to do so. All data from World Wind is cached and installed in the folder below the Cache directory. The data set organizes it. It may happen that you are lucky enough to be reading about the WMS protocol and then interfacing with the servers, which World Wind connects to.

Is the imagery, which world wind provides copyrighted?

Some of the NASA World Wind features which you can use for this purpose are Blue Marble, Landsat, or USGS public domain data. You can even use them on websites even for commercial use.

Add-ons and plug ins

NASA World Wind is loaded with a number of Add-ons and plug-in. The add-ons are actually small extensions, which provide added functionality to NASA World Wind. A few of these are discussed under.

Point layers: these are simple XML files which display place marks i.e. points of interest in the form of icons.

Trail layers: paths i.e. routes and boundaries.

The OneEarth add-on is an attempt for making use of public WMS servers to provide high-resolution imagery. There are many countries for which data is available.

You can also use the Virtual Earth plug as it has high resolution data for countries like United Kingdom, Australia, Italy, Japan, etc.

If high resolution imagery is not available for your country, you demand for releasing such data to politicians of your country.

Why are these crazy circles appearing on the maps?

The crazy circles are crop watered fields. For watering these fields, a technique called central pivot irrigation is used. Because fields start appearing like circles when looked from the sky.