NASA International Space Station Science Officer and Flight Engineer for Expedition 7 Edward T. Lu, reads a marker placed in front of a tree planted in honor of cosmonaut Yuri Gagarin on the grounds of the Cosmonaut Hotel in Baikonur, Kazahstan on Wednesday, April 9, 2003. The trees along this walkway are planted in honor of other cosmonauts and astronauts. Photo Credit: (NASA/Bill Ingalls)