Before the launch of HST, estimates of the Hubble constant typically had errors of up to 50%, but Hubble measurements of Cepheid variables in the Virgo Cluster and other distant galaxy clusters provided a measured value with an accuracy of +-10%, which is consistent with other more accurate measurements made since Hubble's launch using other techniques.While Hubble helped to refine estimates of the age of the universe, it also cast doubt on theories about its future.. 
Ni ọdun 2000, Aare Olusegun Obasanjo fi Ṣọ́ọ̀lù jẹ oluranlowo pataki si Aare lori bi ase n nawo.itọkasiàwọn oloselu ara NaijiriLórí Gomina Ipinle Kwaraàwọn ọmọ ile alàgbà ile Naijiria.. 