Astrophysicist Famaey Benedict explained to Futura-Sciences in an interview why this seemingly innocuous discovery posed a serious problem within the framework of the standard cosmological model .
To understand why, first recall that the simulations digital training and the evolution of galaxy populations, based on the existence of dark matter and the dark energy , such as the Millennium Simulation , reproduce quite well the observations. They are well aware of the existence of large scale structures of the universe, ie, clusters of galaxies and their assembly to form filaments separated by cosmic voids . But they fail regarding the formation of dwarf galaxies surrounding large galaxies like the Milky Way and Andromeda.
The campaigns of observations within the SDSS ( Sloan Digital Sky Survey ) helped revolutionize cosmology by making it into an era of precision. This video shows how astronomers are doing it with the SDSS to map the 3D distribution of galaxies and clusters of galaxies in the observable universe. For a French translation can be quite loyal, click the rectangle with two horizontal bars on the bottom right. Subtitles in English should then appear, if it is not already. http://enjoycoloring.com/ By simply moving the mouse over the rectangle, you should see the words "Translate subtitles." Click to bring up the menu language selection, select "French" and then click "OK". © American Museum of Natural History , YouTube
To understand why, first recall that the simulations digital training and the evolution of galaxy populations, based on the existence of dark matter and the dark energy , such as the Millennium Simulation , reproduce quite well the observations. They are well aware of the existence of large scale structures of the universe, ie, clusters of galaxies and their assembly to form filaments separated by cosmic voids . But they fail regarding the formation of dwarf galaxies surrounding large galaxies like the Milky Way and Andromeda.
The campaigns of observations within the SDSS ( Sloan Digital Sky Survey ) helped revolutionize cosmology by making it into an era of precision. This video shows how astronomers are doing it with the SDSS to map the 3D distribution of galaxies and clusters of galaxies in the observable universe. For a French translation can be quite loyal, click the rectangle with two horizontal bars on the bottom right. Subtitles in English should then appear, if it is not already. http://enjoycoloring.com/ By simply moving the mouse over the rectangle, you should see the words "Translate subtitles." Click to bring up the menu language selection, select "French" and then click "OK". © American Museum of Natural History , YouTube