Complete Kibo lab installation on ISS

On July 27, Endeavor's astronauts Chris Cassidy and Tom Marshburn made their fifth and final walk out into space, installing the final details for the laboratory system. Kibo of Japan outside on the international space station (ISS).

During this trip, two astronauts installed television cameras, completing the assembly of Kibo lab systems worth $ 2.4 billion.

Endeavor plans to return to Earth on July 28 after 11 days on ISS. During this trip, the ship's astronauts equipped the Kibo laboratory system with a single room to place telescopes and perform other scientific experiments in an open space environment.

Astronauts Tom Marshburn (left) and Christopher Cassidy on their fourth trip to outer space (Photo: NASA / AP)

In addition, they have also replaced ISS solar cells and provided replacement parts to maintain the station's operation after the shuttles stopped operating next year.

One of Endeavor's astronauts Tim Kopra will stay in ISS, replacing Japanese astronaut Koichi Wakata who has been on the station for the past four and a half months.

ISS is the largest international space project of the twentieth century and the twenty-first century, worth $ 100 billion with 17 participating countries. The current weight of the ISS is over 300 tons and will reach 377 tons after being completed. At first scientists expected the operating time of ISS on orbit to be 15 years. Currently the participating countries are planning to extend the " life expectancy " of ISS to 2020 and turn it into a " space port " to prepare for research missions - exploration between planets.