mardi 20 novembre 2018

20 Years Ago, ISS Construction Begins

ISS - International Space Station logo.

Nov. 20, 2018

The largest and most complex international construction project in space began on the steppes of Kazakhstan 20 years ago today. Atop its Proton rocket, on Nov. 20, 1998, the Zarya Functional Cargo Block (FGB) thundered off its launch pad at the Baikonur Cosmodrome into cold wintry skies. Zarya was built by the Khrunichev in Moscow and served as a temporary control module for the nascent ISS. Nine minutes later, Zarya was in orbit and began unfurling its antennas and solar panels, seemingly coming alive in the airless environment of low Earth orbit. The launch of the first element of the International Space Station (ISS) kicked off an incredible journey of orbital assembly, operations, and science.

International Space Station (ISS). Animation Credit: NASA

The ISS Program can trace its roots back to 1984, when President Ronald W. Reagan proposed that the United Stated develop an Earth orbiting space station. The United States invited Canada, Japan, and the European Space Agency (ESA) to join the project in 1988, and five years later President Bill Clinton invited Russia to join the partnership. Russia not only brought its many years of experience with long-duration human space flight to the program but also modules for the planned Mir 2 space station. Former adversaries on Earth were now working together to build the largest laboratory in space.

Image above: Left: Launch of the Zarya Functional Cargo Block from the Baikonur Cosmodrome. Right: Launch of Space Shuttle Endeavour from the Kennedy Space Center on the STS-88 mission to deliver the Unity Node 1 module. Images Credits: ROSCOSMOS/NASA.

On Dec. 4, Space Shuttle Endeavour on the STS-88 mission roared off Launch Complex 39A at Kennedy Space Center in Florida, carrying the Unity Node 1 module in its cargo bay. Built by The Boeing Corporation at a facility at the NASA Marshall Space Flight Center in Huntsville, Alabama, Unity was the first American component of the ISS. Two days after launch, Endeavour and her six-person crew rendezvoused with Zarya, and using the Shuttle’s robotic arm, captured the Russian module and mated it with Unity. Designed and built by engineers thousands of miles apart and never joined together on Earth, the first two modules of the ISS fit perfectly together when they met in space. The STS-88 crew spent the next few days making connections between the two modules before releasing the newly formed but still embryonic ISS. This marked the first step in the assembly of the ISS, which continued for 13 years.

Image above: Left: Zarya as seen from the approaching Space Shuttle Atlantis during the STS-88 mission. Right: Zarya has been mated with Unity in the Shuttle’s cargo bay and astronauts are outside making connections between the two modules. Images Credit: NASA.

By late 2000, the ISS was ready to receive its first long-duration residents. On October 31, the Expedition 1 crew of William M. Shepard, Sergey K. Krikalev, and Yuri P. Gidzenko blasted off from Baikonur and docked with ISS two days later. Since that day, international teams of astronauts and cosmonauts have kept the ISS permanently occupied, performing the routine operations and maintenance on the station including dozens of spacewalks and conducting research in a wide array of scientific disciplines.

Images above: Left: The first two segments of ISS after release from Space Shuttle Atlantis – Unity Node 1 at left and Zarya Functional Cargo Block at right. Assembly of ISS is underway! Right: The first crew to work and live aboard ISS (left to right) Flight Engineer Sergey Krikalev, Commander William Shepard, and Flight Engineer Yuri Gidzenko. Image Credit: NASA.

Today, the ISS is the largest space vehicle ever built and a unique laboratory for conducting research in a wide variety of scientific disciplines. Including its solar arrays, it is as large as a football field. The habitable volume in its various international modules is larger than a six-bedroom house. Since November 2000, more than 230 individuals from 18 countries have visited the ISS. As a laboratory, the ISS has hosted more than 2,500 scientific investigations from more than 100 countries.

Image above: The International Space Station as it appears in 2018. Zarya is visible at the center of the complex, identifiable by its partially retracted solar arrays. Image Credit: NASA.

Roscosmos: Statement on the outcome of the International Scientific Conference on the occasion of the 20th ISS anniversary

Statement on the outcome of the International Scientific Conference “SPACE IS AN OPEN AREA FOR INТERNATIONAL COOPERATION AND DEVELOPMENT” on the occasion of the 20th International Space Station anniversary.

The participants of the Conference, highly appreciating the results of activities obtained over the past 20 years since the launch of the first element of the International Space Station, and 18 years of continuous human occupancy, recognize the obvious importance of the ISS as a major international science and technology initiative aimed to advance human capabilities in low Earth orbit and reach scientific, practical and socio-economic goals of the partner countries and the many other countries who are utilizing its capabilities.

The participants noted with satisfaction the uniqueness of the International Space Station program and the International Partnership, stressing its importance as a platform to strengthen and develop international space cooperation.

The participants of the Conference welcome the benefits of utilizing the ISS and leveraging its capabilities for research and technology demonstrations and helping to solve challenge of long duration human missions in space and to prepare for space exploration beyond the low-earth orbit, and specifically in the field of international research and exploration of the Moon, Mars and deep space. The International Space Station not only helps us to explore beyond LEO, but using the capabilities of station to its fullest potential provides technological, scientific, and educational benefits for all humankind.

Image above: International Space Station building components since Zarya module (green). Image Credit: NASA.

Related article:

European Space Agency (ESA):

20 memorable moments from the International Space Station:


Related links:

Relive the launch of Zarya as narrated by JSC PAO Rob Navias.

For more on the ISS, visit

To see the ISS fly overhead from where you live or work, visit

Historic Missions:

NASA History:

International Space Station (ISS):

Images (mentioned), Animation (mentioned), Text, Credits: NASA/Kelli Mars.

Best regards,

Aucun commentaire:

Enregistrer un commentaire