For a more detailed look @ NIRSpec-Extracting Information From Starlight http://www.nasa.gov/centers/goddard/news/features/2010/nirspec.html
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
For a more detailed look @ NIRSpec-Extracting Information From Starlight http://www.nasa.gov/centers/goddard/news/features/2010/nirspec.html