Robert Z. Pearlman

The seven members of the Expedition 74 crew studied stem cells, packed up a cargo ship and maintained their toilet this week aboard the International Space Station.

A SpaceX Falcon 9 rocket carrying 29 Starlink satellites launched from Cape Canaveral Space Force Station in Florida on Dec. 11, 2025. It was the 300th worldwide orbital launch attempt of 2025.

A SpaceX Falcon 9 rocket carrying 27 Starlink satellites launched from Vandenberg Space Force Station in California on Dec. 10, 2025. It was the 160th Falcon 9 flight of the year.

NASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky landed on Russia's Soyuz MS-27 on Dec. 9, 2025, after 245 days on the International Space Station.

A SpaceX Falcon 9 rocket carrying 29 Starlink satellites lifted off from NASA's Kennedy Space Center in Florida on Monday, Dec. 8, 2025. It was the record 32nd flight of the Falcon's first stage.

A SpaceX Falcon 9 rocket carrying 29 Starlink satellites lifted off from Vandenberg Space Force Base in California on Sunday, Dec. 7, 2025.

Newly arrived and soon-to-depart members of Expedition 73 prepared for what is to come next during this, their final week all together aboard the International Space Station.

A SpaceX Falcon 9 rocket carrying 29 Starlink broadband internet satellites launched from the Cape Canaveral Space Force Station in Florida on Tuesday, Dec. 2, 2025.

Expedition 73 gained three crewmates, expanding the International Space Station's complement to 10. Activities continued as the outpost extended beyond 25 years of a continuous human presence.

The liftoff of two cosmonauts a NASA astronaut to the International Space Station caused damage to Russia's launch pad at the Baikonur Cosmodrome in Kazakhstan.

Russia's Soyuz MS-28 crew — Sergey Kud-Sverchkov and Sergei Mikaev of Roscosmos and Chris Williams of NASA — launched for and arrived at the ISS on Nov. 27, 2025, Thanksgiving Day.

A SpaceX Falcon 9 rocket, flying for the first time, launched 28 Starlink satellites into low Earth orbit from Vandenberg Space Force Base in California on Sunday, Nov. 23, 2025.

A SpaceX rocket carrying 29 Starlink satellites launched from Cape Canaveral Space Force Station in Florida on the company's 150 Falcon 9 mission of 2025.

It is "rocket science," even when it comes down to high school-level physics. This week's lesson: Force equals mass times acceleration.

Russian cosmonauts Sergey Ryzhikov and Alexey Zubritsky completed a 6 hour and 54 minute spacewalk outside the International Space Station on Tuesday, Oct. 28, 2025.

Science and maintenance work continue on the International Space Station, but updates are still halted due to the U.S. government shutdown. A JAXA astronaut's social media posts are the exception.

Russian cosmonauts Sergey Ryzhikov and Alexey Zubritsky worked outside the International Space Station on Tuesday (Oct. 16), conducting a spacewalk to install, retrieve and jettison equipment.

As the U.S. government shutdown halts NASA updates, a JAXA astronaut's photos show that work continues on the space station.

The Expedition 73 crew continued their science research and maintenance work aboard the International Space Station this week, despite the start of a U.S. government shutdown back on Earth.

A SpaceX Falcon 9 rocket carrying 28 Starlink satellites launched from Vandenberg Space Force Station in California on Sunday, Sept. 28, 2025.

Expedition 73 crewmembers sequenced DNA and worked with virtual reality glasses this week, while also continuing to unpack cargo vehicles and congratulating NASA's 24th group of astronaut candidates.

The Expedition 73 crew on the International Space Station began their week with the arrival of an extra-large cargo delivery with new science and supplies, as well as care packages from home.

As their research activities continued, the Expedition 73 crew had a busy week on the International Space Station with the departure of a cargo vehicle and preparations for the arrival of two more.

A SpaceX Falcon 9 rocket carrying 24 Starlink internet broadband satellites lifted off from Vandenberg Space Force Base in California on Saturday, Sept. 6, 2025.