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| 2015/12/28 | Correction of an erroneous formula for the Hawking temperature. |
| 2014/03/18 | Indirect confirmation of the hypothesis of inflation. |
| 2014/02/01 | An introduction to the ΛCDM model for the formation of the galaxies. |
| 2013/12/20 | An introduction to the hypergiant stars. |
| 2013/12/10 | A new picture of a lenticular galaxy. |
| 2013/10/10 | Some precisions about lenticular galaxies. |
| 2013/03/28 | Introduction of the data of the Planck satellite. |
| 2012/04/18 | Some text rewriting. |
| 2011/07/29 | A bit of cosmetics. |
| 2011/02/22 | New advances in the measure of the distance of galaxies. |
| 2010/02/15 | A new paragraph about strange stars. |
| 2010/01/28 | I've changed the navigational interface. Hope you like it ! |
| 2010/01/05 | Some precisions about the end of life of stars. |
| 2009/04/13 | Supermassive black holes and spiral galaxies. |
| 2008/03/19 | A complement about the formation of neutron stars. |
| 2008/03/10 | Some more precisions about the limit and formation of neutron stars. |
| 2007/01/08 | I've added a paragraph about the mass of the stars. |
| 2006/07/16 | Some corrections about stellar wind and white dwarfs. |
| 2005/11/18 | I've added a new page about the birth of galaxies. |
| 2005/11/01 | I've rewritten and completed the chapter about galaxies. |
| 2005/11/01 | Update of some links. |
| 2005/03/31 | An update about the standard model, especially the value of the forces according to the distance. |
| 2005/01/04 | An interesting link on the page about relativity |
| 2004/07/14 | Contacts are now available through forms. |
| 2004/04/19 | An update of the page about relativity. |
| 2004/01/11 | I've added references at the botton of some pages, for those who want to know more about the subject. |
| 2003/12/14 | A new page about Gamma Ray Bursts. |
| 2003/11/29 | An update of some links. |
| 2003/10/26 | A short approach of cosmology. |
| 2003/06/13 | A precision about galaxies NGC3314. They are not colliding ! |
| 2003/05/26 | Can't you guess?? |
| 2003/02/16 | A new page about the black hole thermodynamics. |
| 2003/02/12 | A lot of updates in the existing pages, with mathematical formulae, for those who are interested... |
| 2003/01/20 | A new image of a lenticular galaxy. |
| 2003/01/05 | A new paragraph about barred spiral galaxies. |
| 2002/09/12 | Use of pop-up windows for the large images. |
| 2002/09/08 | A new image of galaxy : the Hoag's object. |
| 2002/05/12 | A new chapter about the evolution of galaxies. |
| 2002/05/07 | Update of the redshift explanation in the lexicon. |
| 2002/04/07 | A new paragraph about magnetars |
| 2002/03/23 | Some updates about the supernovae
Use of style sheets (lighter pages) |
| 2002/03/10 | First translation |