The Spanish were expelled from Tenochtitlan on this day in 1520. Tower Bridge opened in 1894. Albert Einstein published On the Electrodynamics of Moving Bodies in 1905 and the crew of Soyuz 11 were killed in 1971 when their air supply escaped due to a faulty valve. Celebrating birthdays: Swedish rocker Yngwie Malmsteen, überWAG Cheryl Cole and smokin' US swimmer Michael Phelps. It is Independence Day in the Democratic Republic of the Congo.