International Space Station Timeline

(November 20, 1998 – Present)

The International Space Station (ISS) is a habitable modular space station in low Earth orbit, jointly built and operated by NASA, Roscosmos, ESA, JAXA, and CSA. Launched beginning in 1998, it has served continuously as a microgravity laboratory for scientific research, technology demonstrations, and international cooperation, hosting crews of astronauts from around the world since November 2000. More Less

Go to: Timeline | Event List | Key Facts | Directory

Origins and Planning

Reagan directs NASA to develop Space Station Freedom

Jan 25, 1984

In his State of the Union address, President Ronald Reagan directed NASA to build a permanently crewed space station within a decade. The project, initially called Space Station Freedom, laid the groundwork for what would eventually become the International Space Station after years of redesigns and budget struggles.

Image source: Space Station Freedom

Mir-Shuttle program begins cooperation with Russia

Mar 14, 1995

The Space Shuttle Atlantis docked with the Russian space station Mir during STS-71, marking the first docking between a US shuttle and a Russian station. This Shuttle-Mir program built critical operational experience and international trust that paved the way for the International Space Station partnership.

Image source: Shuttle–Mir program

International partners sign ISS intergovernmental agreement

Jan 29, 1998

Fifteen nations, including the United States, Russia, Japan, Canada, and members of the European Space Agency, signed the Intergovernmental Agreement establishing the framework for the design, development, operation, and utilization of the International Space Station.

Image source: International Space Station program

Assembly and Construction

Zarya module launched from Baikonur Cosmodrome

Nov 20, 1998

A Russian Proton-K rocket launched Zarya, the Functional Cargo Block funded by the United States but built by Russia, into orbit. As the first component of the International Space Station, Zarya provided initial propulsion, power, and storage during the early stages of assembly.

Image source: Zarya (ISS module)

Unity node connected to Zarya by Space Shuttle Endeavour

Dec 6, 1998

During mission STS-88, astronauts Jerry Ross and James Newman performed three spacewalks to attach the American-built Unity connecting node to Zarya, creating the first two-module configuration of the International Space Station.

Image source: Unity (ISS module)

Zvezda service module joins the station

Jul 26, 2000

The Russian Zvezda service module docked with the orbiting complex, providing living quarters, life support systems, and attitude control. Its arrival made the station habitable for the first time and enabled permanent human presence in orbit.

Image source: Zvezda (ISS module)

P6 truss and first solar arrays deployed

Dec 3, 2000

Astronauts installed the P6 truss segment with its pair of solar array wings, temporarily mounted on top of the station's backbone. These arrays provided crucial additional electrical power to support expanded operations and scientific work.

Image source: Integrated Truss Structure

Destiny laboratory installed by Space Shuttle Atlantis

Feb 10, 2001

Space Shuttle Atlantis delivered the US Destiny laboratory, the primary research facility for science experiments aboard the station. Destiny became the centerpiece of American scientific operations in orbit.

Image source: Destiny (ISS module)

Canadarm2 robotic arm delivered to the station

Apr 19, 2001

Space Shuttle Endeavour carried the Canadian-built Canadarm2, also known as the Space Station Remote Manipulator System, to the ISS. The 17-meter robotic arm became essential for capturing visiting spacecraft and maneuvering large modules during assembly.

Image source: Mobile Servicing System

Quest airlock installed for US spacewalks

Jul 15, 2001

Space Shuttle Atlantis delivered the Quest Joint Airlock, allowing both American EMU spacesuits and Russian Orlan suits to be used for spacewalks from the station, greatly expanding extravehicular activity capabilities.

Image source: Quest Joint Airlock

S0 truss attached, forming central backbone

Apr 11, 2002

Space Shuttle Atlantis delivered the S0 truss, the center segment of the Integrated Truss Structure, which was mounted atop the Destiny laboratory. It served as the foundation for future truss segments and housed critical systems including the Mobile Transporter.

Mobile Servicing System becomes fully operational

Jun 5, 2002

With the delivery of the Mobile Base System by Space Shuttle Endeavour on STS-111, Canadarm2 gained the ability to move along rails spanning the station's truss, dramatically increasing its reach and utility for construction tasks.

Image source: Mobile Servicing System

P1 and P3/P4 truss segments expand port side structure

Sep 12, 2006

Shuttle missions resumed after the Columbia disaster, and Atlantis delivered the P3/P4 truss with its solar arrays during STS-115, followed by further segments, steadily doubling the station's electrical generating capacity as assembly resumed in earnest.

Harmony node connects European and Japanese labs

Oct 23, 2007

Space Shuttle Discovery delivered the Harmony connecting node, which later became the attachment point for the European Columbus laboratory and the Japanese Kibo experiment module, expanding the station's international research capacity.

Image source: Harmony (ISS module)

European Columbus laboratory installed

Feb 11, 2008

Space Shuttle Atlantis delivered the European Space Agency's Columbus laboratory, Europe's primary research facility aboard the station. Columbus hosts experiments in biology, fluid physics, materials science, and human physiology.

Image source: Columbus (ISS module)

Japanese Kibo laboratory begins installation

Mar 11, 2008 - Jul 31, 2009

Across three shuttle flights, the Japanese Experiment Module Kibo was assembled on the station, becoming the largest single laboratory module. It includes an exposed facility for external experiments and its own small robotic arm.

Image source: Kibō (ISS module)

Tranquility node and Cupola observation deck added

Feb 8, 2010

Space Shuttle Endeavour delivered the Tranquility node with the seven-window Cupola, providing panoramic views of Earth and serving as the primary control post for Canadarm2 operations during spacecraft captures.

Image source: Cupola (ISS module)

Rassvet mini-research module delivered by Atlantis

May 18, 2010

Space Shuttle Atlantis carried the Russian Rassvet module to the station, where it was attached to the Zarya nadir port. Rassvet provides additional storage space and a new docking port for Soyuz and Progress spacecraft.

Image source: Rassvet (ISS module)

Leonardo becomes permanent Multi-Purpose Logistics Module

Mar 1, 2011

During STS-133, the Italian-built Leonardo logistics module was permanently attached to the station as the Permanent Multipurpose Module, converting from a reusable cargo carrier into a fixed storage facility.

Image source: Leonardo (ISS module)

Space Shuttle program ends, ending major assembly era

Jul 21, 2011

Space Shuttle Atlantis landed after mission STS-135, concluding NASA's Space Shuttle program. With the station essentially complete at over 400 metric tons, resupply shifted to Russian, European, Japanese, and soon commercial American vehicles.

Image source: STS-135

Nauka laboratory module finally docks with station

Jul 29, 2021

After years of delays, Russia's Nauka multipurpose laboratory module docked with the Zvezda nadir port. Hours later its thrusters accidentally fired, briefly tilting the entire station before ground controllers restored attitude control.

Image source: Nauka (ISS module)

Crewed Missions

Expedition 1 arrives as first resident crew

Nov 2, 2000

Commander Bill Shepherd and cosmonauts Yuri Gidzenko and Sergei Krikalev arrived aboard a Soyuz TM-31 spacecraft, becoming the first long-duration crew of the International Space Station. Their arrival began an unbroken human presence in low Earth orbit that continues today.

Image source: Expedition 1

Expedition 1 arrives as first resident crew

Station reaches full six-person crew capacity

May 29, 2009

With the arrival of Expedition 20 crew members via Soyuz TMA-15, the station's population grew from three to six residents for the first time, enabling significantly more hours of scientific research each week.

Image source: Expedition 20

First H-II Transfer Vehicle docks with station

Sep 17, 2009

Japan's uncrewed HTV cargo spacecraft successfully berthed with the ISS, demonstrating a new automated resupply capability and delivering supplies, spare parts, and experiments to the growing outpost.

Image source: H-II Transfer Vehicle

Commercial Dragon capsule makes first cargo flight

May 25, 2012

SpaceX's Dragon spacecraft became the first commercial vehicle to berth with the ISS during its demonstration flight, ushering in a new era of commercially operated resupply missions under NASA's Commercial Resupply Services contracts.

Image source: SpaceX CRS-1

Commercial Crew Program launches crewed Dragon Demo-2

May 30, 2020 - Aug 2, 2020

NASA astronauts Bob Behnken and Doug Hurley flew SpaceX's Crew Dragon to the ISS, marking the first crewed orbital launch from American soil since 2011 and restoring independent US crew transportation to the station.

Image source: Crew Dragon Demo-2

Science and Milestones

AMS-02 particle detector installed on starboard truss

May 19, 2011

Space Shuttle Endeavour delivered the Alpha Magnetic Spectrometer-2, a state-of-the-art particle physics detector searching for dark matter, antimatter, and cosmic rays. It has collected billions of cosmic ray events since installation.

Image source: Alpha Magnetic Spectrometer

Bigelow Expandable Activity Module attached

Apr 16, 2016

The BEAM experimental inflatable habitat was attached to the Tranquility node and expanded to full size, testing expandable module technology that could reduce launch mass and volume for future deep space habitats.

Image source: Bigelow Expandable Activity Module

Peggy Whitson sets American spaceflight duration record

Sep 2, 2017

Astronaut Peggy Whitson returned to Earth after 288 days in space, bringing her cumulative total to 665 days, the most of any American astronaut. During her Expedition 50/51/52 stay she conducted four spacewalks and extensive life science research.

Image source: Peggy Whitson

Station celebrates 20 years of continuous human presence

Nov 2, 2020

The International Space Station marked two decades of continuous human habitation, having hosted more than 240 visitors from 19 countries and supported thousands of experiments in microgravity across biology, physics, astronomy, and human health.

Image source: International Space Station

Key Facts

The first ISS module, Zarya, was launched by Russia on November 20, 1998, marking the start of orbital assembly.
Human presence aboard the ISS has been continuous since Expedition 1 arrived on November 2, 2000, making it the longest continuously inhabited spacecraft in history.
The ISS orbits Earth approximately every 90 minutes at an altitude of about 400 kilometers (250 miles), traveling at roughly 28,000 km/h (17,500 mph).
It is a joint project involving five space agencies: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada).
The station spans about the size of a football field, weighs over 400,000 kilograms, and has hosted more than 270 individuals from over 20 countries.

Source

This International Space Station timeline was generated with the help of AI, using information found on the internet.

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