URL https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2003/05/artist_s_impression_of_how_the_very_early_universe_might_have_looked/9689974-3-eng-GB/Artist_s_impression_of_how_the_very_early_Universe_might_have_looked_article.jpg
URL2https://www.esa.int/Science_Exploration/Space_Science/Extreme_space/What_is_the_Universe_made_of
