This Hubble Heritage image of ESO 510-G13 shows a galaxy that has an unusual pancake-like disk structure. Image Credit: NASA and The Hubble Heritage Team (STScI/AURA) Acknowledgment: C. Conselice (U. Wisconsin/STScI)

• Internet sites which are worth to visit:

  
  
• By Jeanna Bryner from Space.com, Top 10 Star Mysteries.
  
• High Energy Astrophysics Science Archive Research Center, HEASARC.
  
• Nasa's Astro-biology pages.
  
• Inquiring Minds of Fermi National Accelerator Laboratory.
  
• Favorite Astronomy Links of the Department of Physics and Astronomy of the Sonoma State University.
  
• School Page of the Center for Particle Astrophysics, CfPA at the University of California, Berkeley.
  
• Cambridge Relativity pages on Black Holes.
  
• Center for Astrophysics and Space Sciences of the University of California, San Diego.
  
• Center for Astrophysical Research in Antarctica of the University of Chicago.
  
• Harvard-Smithsonian Center for Astrophysics of Harvard College and Smithsonian Astrophysical Observatories.
  
• Beijing Astronomical Observatory of the Chinese Academy of Science.
  
• Sky and Telescope, Astronomy and Space links.
  
• Nasa's pages of Cassini-Huyghens project
  
• Esa's pages of Cassini-Huyghens project
  
• Hubble Space Telescope project of NASA.
  
• NASA's Chandra X-ray observatory.
  
• Combined Hubble and Chandra observation: Superwind sculpts filamentary features of the NGC 3079 galaxy.
  
• Nuclear Astrophysics Data of Oak Ridge National Laboratory.
  
• Secção de Astronomia, Astrofísica e Astronáutica da Associação Académica da Universidade de Coimbra, SAC Web Site.
  
• Núcleo de Astrofísica da Physis, AstroPhysis, Web Site.
  

• More on space exploration:

  
  
• Odyssey's voyage to Mars.
  
• National Aeronautics and Space Agency, NASA.
  
• European Space Agency, ESA.
  
• Netherlands Foundation for Research in Astronomy ASRON.
  
• All about space.
  
• Don't miss the Leonid meteor showers on 19 November 2004 (6:42 an 21:49 UT). The best time is 21:49 UT (Nov. 19).
  The site of Jupiter Scientic has some information on the Leonid showers of 2002.
  
• Asteroid 4179 Toutatis
  

• Some local experts:

  
  
• Alex Blin of the Centro de Física Teórica of the Universidade of Coimbra.
  
• Paulo Gali Macedo of the Centre for Astrophysics of the University of Porto.
  
• Orfeu Bertolami of the Instituto Superior Técnico of Lisboa.
  
• Maria da Conceição Bento of the Centro de Física das Interacções Fundamentais of the Instituto Superior Técnico of Lisboa.
  
• Robertus Potting of the Centro Multidisciplinar de Astrofísica of the University of Algarve.