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Frank Rubio Sets a New U.S. Record for Longest Space Mission

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Astronaut Frank Rubio has achieved a remarkable milestone during his mission aboard the International Space Station. With over 355 days spent in low-Earth orbit, Rubio has broken the record for the longest space mission by a U.S. astronaut. This accomplishment, while unexpected, reflects the dedication and resilience of astronauts like Rubio, who embarked on what was initially planned as a six-month mission but found himself on the cusp of a historic achievement.

Breaking Records: Rubio’s Extraordinary Journey

Frank Rubio’s Record-Breaking Mission:

Astronaut Frank Rubio’s journey began in September 2022 when he joined the International Space Station’s crew. Little did he know that this mission would propel him into the annals of space exploration history. On Monday, Rubio surpassed the previous U.S. record for the longest space mission, previously held by retired NASA astronaut Mark Vande Hei.

Approaching a New Milestone:

Remarkably, Rubio’s mission is far from over. As we look ahead to the coming weeks, a return to Earth is not expected before September 27. When that day comes, Rubio will have completed at least 371 days in orbit, nearing the distinction of becoming the first American to spend over a full calendar year in microgravity.

Unexpected Extensions: Challenges in Space

Change of Plans:

Rubio’s mission was not initially designed to break records. When he and his crewmates departed for the space station in September 2022, they anticipated a six-month stay. However, unforeseen challenges arose when their Soyuz capsule experienced a coolant leak in December. Russian space agency Roscosmos deemed the spacecraft unsafe for the crew’s return, prompting a change of plans.

The Uncrewed Return:

The original Soyuz capsule, MS-22, returned to Earth without a crew on March 28. Roscosmos subsequently launched a replacement spacecraft, MS-23, which docked with the space station on February 25. This delay in Rubio’s return was necessary as Russia prepared for the next Soyuz vehicle, which will launch with a new crew, including two cosmonauts and one NASA astronaut.

Commemorating a Historic Feat

Capturing Moments in Space:

To mark his historic achievement, Rubio recorded a conversation with former record-holder Mark Vande Hei on September 5. This conversation, aired on NASA’s media channel, provided insight into the personal challenges and inspirations Rubio experienced during his extended stay in space.

Recognition and Gratitude:

NASA Administrator Bill Nelson also paid tribute to Rubio’s milestone, acknowledging that Rubio’s journey embodies the spirit of exploration. Rubio’s dedication not only breaks records but also paves the way for future generations of astronauts, showcasing the importance of resilience and commitment in space missions.

In the Record Books:

While Rubio’s achievement is remarkable, it is important to note that it falls short of the world record for the longest space mission, held by Russian cosmonaut Valeri Polyakov, who spent 437 continuous days in orbit aboard Russia’s Mir space station. The U.S. record for consecutive days in space was previously held by Mark Vande Hei, a testament to the dynamic nature of space missions.


Frank Rubio’s journey in space serves as a testament to human determination and adaptability. From unexpected mission extensions to breaking records, Rubio’s experiences offer valuable insights into the challenges and rewards of space exploration. As we celebrate this historic achievement, we look forward to the continued progress and discoveries that lie ahead in our exploration of the cosmos.