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US EVA-99

NASA astronaut Jessica Meir and ESA astronaut Sophie Adenot will replace a retroreflector on the forward port of the space station’s Harmony module to support spacecraft navigation during rendezvous and docking operations. After installing the reflector, the crew will work to install jumper cables for the data-relay systems, prepare the Alpha Magnetic Spectrometer’s radiator for future maintenance, and replace a high-definition camera on the station’s truss. Location: International Space Station
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Countdown Timer - US EVA-99

Get ready for an incredible journey into space as we count down to the historic US EVA-99 on Tuesday, September 1, 2026! NASA astronaut Jessica Meir and ESA astronaut Sophie Adenot will embark on a vital mission aboard the International Space Station, where they will replace a retroreflector on the Harmony module. This essential upgrade is key for spacecraft navigation during rendezvous and docking operations. But that's not all! The astronauts will also tackle several important tasks, including installing jumper cables for data-relay systems and preparing the Alpha Magnetic Spectrometer’s radiator for future maintenance. Plus, they'll be replacing a high-definition camera on the station’s truss. Join us as we countdown to this spectacular event that showcases human ingenuity and the spirit of exploration! Don't miss a moment—stay tuned with our countdown timer for all the latest updates!

Frequently Asked Questions

There are exactly 6 days left until US EVA-99, which is 132 hours or 7868 minutes.

US EVA-99 will take place on Tuesday, September 1, 2026 at 12:30 PM.

Use our real-time countdown to precisely track the time remaining until US EVA-99.

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