An extraordinary throwback to 47 years ago today, at 2:56 a.m. on July 21, 1969, when the first man stepped onto the Moon from Apollo 11. Houston Lighting & Power customers Neil Armstrong, Edwin "Buzz" Aldrin and Michael Collins claimed the Moon for American science and ingenuity. A mere 87 years since electricity came to Houston, generators triggered the power flow that helped astronauts reach the Moon. #tbt #tbtexas #tbtx #apollo11