Douro Azul 
http://www.douroazul.pt/ 
 
NASA National Aeronautics and Space Administration (EUA)
http://www.nasa.gov/ 

ESA European Space Agency
http://www.esa.int/
  
National Space Society (EUA) 
http://www.nss.org/ 
 
Space Industry Recruitment Agency
http://www.space-careers.com/ 

Sic Blog - The first Portuguese person in space
http://sic.sapo.pt/online/blogs/portugues_no_espaco/