Happy birthday Carl Sagan

Caught between day and night, Halley's comet streaks thought the sky in this image from the National Astronomy Observatories (NOAO). The image was made with a charge-coupled device on a 16-inch telescope at NOAO's observatory in Cerro Tolodo, Chile in Jan. 9, 1986. (AP Photo/NOAO)

November 09, 2013 4:13 pm  •