NASA Administrator Jared Isaacman views a tree planted by cosmonaut Yuri Gagarin, Monday, July 13, 2026, at the Cosmonauts Alley at the Cosmonaut Hotel in Baikonur, Kazakhstan. In a tradition dating back to Gagarin’s spaceflight in 1961, cosmonauts and astronauts plant trees at the grove prior to their first mission to space. Photo Credit: (NASA/John Kraus)

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)

jsc2020e016869 - Along the Walk of the Cosmonauts at the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 63 crewmember Chris Cassidy of NASA lays flowers March 27 at the site where the tree bearing the name of Yuri Gagarin, the first human to fly in space, is planted. March 27, 2020 marked the 52nd anniversary of Gagarin’s death at the age of 34. Looking on are cosmonaut Yuri Malenchenko, the Deputy Director of the Gagarin Cosmonaut Training Center, and Cassidy’s crewmates, Ivan Vagner and Anatoly Ivanishin of Roscosmos. Cassidy, Vagner and Ivanishin will launch April 9 on the Soyuz MS-16 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-and-a-half month mission on the International Space Station...Andrey Shelepin/Gagarin Cosmonaut Training Center.

jsc2020e016870 - Along the Walk of the Cosmonauts at the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 63 backup crewmember Steve Bowen of NASA lays flowers March 27 at the site where the tree bearing the name of Yuri Gagarin, the first human to fly in space, is planted. March 27, 2020 marked the 52nd anniversary of Gagarin’s death at the age of 34. Looking on are cosmonaut Yuri Malenchenko, the Deputy Director of the Gagarin Cosmonaut Training Center, and backup crewmates Andrei Babkin and Sergey Ryzhikov of Roscosmos. Looking on at the right are prime crewmembers Chris Cassidy of NASA and Ivan Vagner and Anatoly Ivanishin of Roscosmos who will launch April 9 on the Soyuz MS-16 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-and-a-half month mission on the International Space Station...Andrey Shelepin/Gagarin Cosmonaut Training Center.

Expedition 43 NASA Astronaut Scott Kelly walks along the Avenue of the Cosmonauts where two long rows of trees are all marked with the name and year of the crew member who planted them starting from Yuri Gagarin's tree, Friday, March 20, 2015 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Kelly, and Russian Cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos) are preparing for launch to the International Space Station in their Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time. As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit: (NASA/Bill Ingalls)

Expedition 43 Russian Cosmonauts Mikhail Kornienko, left, and Gennady Padalka of the Russian Federal Space Agency (Roscosmos), center, and NASA Astronaut Scott Kelly answer questions from the press while standing on the Avenue of the Cosmonauts where two long rows of trees are all marked with the name and year of the crew member who planted them starting from Yuri Gagarin's tree, Saturday, March 21, 2015 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Kelly, Padalka, and Kornienko are preparing for launch to the International Space Station in their Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit: (NASA/Bill Ingalls)

Expedition 43 Russian Cosmonauts Mikhail Kornienko, left, and Gennady Padalka of the Russian Federal Space Agency (Roscosmos), center, and NASA Astronaut Scott Kelly answer questions from the press while standing on the Avenue of the Cosmonauts where two long rows of trees are all marked with the name and year of the crew member who planted them starting from Yuri Gagarin's tree, Saturday, March 21, 2015 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Kelly, Padalka, and Kornienko are preparing for launch to the International Space Station in their Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit: (NASA/Bill Ingalls)

At the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 34/35 crewmembers Flight Engineer Chris Hadfield of the Canadian Space Agency (left), Soyuz Commander Roman Romanenko (center) and Flight Engineer Tom Marshburn (right) pose for pictures Dec. 13, 2012 at the site of the tree planted in honor of Yuri Gagarin, the first human in space, as part of traditional pre-launch ceremonies. The trio will launch Dec. 19 from the Baikonur Cosmodrome in Kazakhstan Dec. 19 on the Soyuz TMA-07M spacecraft for a five-month mission on the International Space Station. NASA/Victor Zelentsov

Expedition 43 prime crew members: NASA Astronaut Scott Kelly, and Russian Cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos), and backup crew members Sergei Volkov, and Alexey Ovchinin and of Roscosmos, and NASA Astronaut Jeff Williams walk along the Avenue of the Cosmonauts where two long rows of trees are all marked with the name and year of the crew member who planted them starting from Yuri Gagarin's tree, Saturday, March 21, 2015, Baikonur, Kazakhstan. Expedition 43 NASA Astronaut Scott Kelly, and Russian Cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos) are scheduled to launch to the International Space Station in the Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit: (NASA/Bill Ingalls)

Expedition 43 prime crew members: NASA Astronaut Scott Kelly, and Russian Cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos), and backup crew members Sergei Volkov, and Alexey Ovchinin and of Roscosmos, and NASA Astronaut Jeff Williams walk along the Avenue of the Cosmonauts where two long rows of trees are all marked with the name and year of the crew member who planted them starting from Yuri Gagarin's tree, Saturday, March 21, 2015, Baikonur, Kazakhstan. Expedition 43 NASA Astronaut Scott Kelly, and Russian Cosmonauts Gennady Padalka, and Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos) are scheduled to launch to the International Space Station in the Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan March 28, Kazakh time (March 27 Eastern time.) As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016. Photo Credit: (NASA/Bill Ingalls)