On November 2, 2000, the crew of Expedition 1 arrived at the International Space Station aboard the Russian Soyuz TM-31 spacecraft. Commander Bill Shepherd and cosmonauts Yuri Gidzenko and Sergei K. Krikalev became the first long-duration residents of the orbital laboratory, initiating an uninterrupted human presence in space that continues to this day. Their successful docking at the Zvezda module transformed the station from an assembly of individual parts into a living, breathing habitat, cementing the site's role as a symbol of unprecedented international cooperation.
The journey to this moment began years earlier with the launch of the Zarya module in 1998, followed by a series of tense, complex robotic and shuttle-led assembly missions. By the time the Expedition 1 crew climbed aboard, the station was a sprawling, cold collection of hardware awaiting the warmth of human life. The launch from the legendary Baikonur Cosmodrome in Kazakhstan, occurring just days before a major U.S. presidential election, saw the three men blast off on a Soyuz-U rocket. They spent two days in orbit, conducting meticulous rendezvous maneuvers to align their craft with the station's aft port, a process that bridged decades of separate space-faring traditions.
How did a Navy SEAL and two cosmonauts prepare to live in orbit?
The Expedition 1 crew was a unique amalgam of experience and operational styles. Bill Shepherd, a former Navy SEAL with shuttle experience, faced skepticism from the Russian space agency regarding his suitability for long-duration command, yet he brought a maritime sensibility to the mission. Yuri Gidzenko, serving as the pilot for the docking, drew upon his previous 180-day stay on the Mir station to guide the team. Sergei K. Krikalev, perhaps the most seasoned among them, had already spent over a year in space and provided the vital continuity required to manage the station's complex, interlocking systems. Together, they navigated the cultural and technological gulf between U.S. and Russian engineering, anticipating that the true challenge of the station would be the integration of two disparate technologies.

The Expedition 1 mission lasted 136 days, setting a precedent for a permanent orbital presence that has remained unbroken since November 2000.
Why was the name "Alpha" chosen for the station?
The name "Alpha" was a personal preference of Bill Shepherd, who drew upon the long history of naval tradition to bring a sense of identity to the station. To the crew, the official title of International Space Station felt cumbersome and disconnected from the intimacy of life in space. Commander Bill Shepherd had advocated for the change for some time, believing that bestowing a name would bring good fortune to the crew and success to the voyage. While Yuriy Semenov, the President of the Russian Space Corporation Energia, initially disapproved—preferring "Mir 2" to honor the legacy of the original Mir station—the crew utilized the call sign "Alpha" for the duration of their stay.
Upon opening the hatch to the Zvezda module, the crew faced an environment that was far from finished. They spent their first weeks activating essential life support systems and computers, all while managing a station that could not yet provide enough power to heat all of its modules. Consequently, the Unity module was left unheated for a time, serving as a silent, cold testament to the work still required. The initial weeks were defined by intensive physical labor, moving cargo delivered by previous supply missions and ensuring that the station's fragile infrastructure could sustain them through the harsh vacuum of space.

How did shuttle missions transform the station during this expedition?
The Expedition 1 crew hosted three visiting Space Shuttle crews that proved critical to the station's expansion and viability. In December 2000, the crew of STS-97 docked with the station to install massive U.S. photovoltaic arrays, which increased the electrical output of the entire complex by fivefold. By February 2001, the STS-98 mission arrived to deliver the Destiny research laboratory, a $1.4 billion component that allowed the station to surpass the total mass of the legendary Mir station for the first time. The final shuttle visit, STS-102, arrived in mid-March to rotate the crew, effectively ending the tenure of Expedition 1 and successfully handing over the keys to the next generation of long-duration residents.
The significance of the Expedition 1 mission extends far beyond the duration of their stay. They set the standard for what it means to work, live, and perform science in low Earth orbit as part of a global partnership involving NASA, Roscosmos, ESA, JAXA, and CSA. Every discovery made and every experiment performed on the station today traces its legacy back to the 136 days Shepherd, Gidzenko, and Krikalev spent tethered to the Earth, proving that humanity could sustain itself in the silent, unforgiving reaches of the cosmos.

The launch of the Expedition 1 crew occurred from the same pad used by Yuri Gagarin, the first human in space, during his historic 1961 flight.
During their 136-day mission, the crew successfully hosted three visiting Space Shuttle crews and two uncrewed Russian Progress resupply vehicles.

The station's Zvezda module, which served as the primary living quarters for the first expedition, arrived and docked autonomously just months before the crew's arrival.
Watch: ISS: Expedition One Launch 2000-10-31
From the NASA2007 channel.
Sources and further reading: Wikipedia — Expedition 1, International Space Station (CC BY-SA). Images: Wikimedia Commons.