NASA makes unprecedented decision to bring International Space Station crew home early after medical emergency – first time in 25-year station history.

NASA’s unprecedented decision to prematurely end a mission to the International Space Station (ISS) because of a sick astronaut is shining a light on how the agency prepares for medical problems and emergencies in space.

The health and the well-being of our astronauts is always and will be our highest priority.” That line, delivered by NASA Administrator Jared Isaacman, frames a decision that sits at the intersection of human physiology and hard engineering: ending an ISS increment early because one crew member needed care that could not be fully delivered

Green aurora can be seen dancing in Earth 's upper atmosphere as the zodiacal light fades, shimmering between the profiles of the space station's solar panels as they rotate to track the sun. The bright stars of the constellations Pegasus, Andromeda and Ares also rotate into view as the station continues its lap of Earth.

NASA crewmembers aboard the International Space Station (ISS) could return to Earth as soon as Thursday, the US space agency said, after a medical emergency prompted the crew to return from their mission early.

NASA’s Crew-11 mission to the International Space Station (ISS) is coming to an unexpectedly abrupt end. “It is in the best interest of our astronauts to return Crew-11 ahead of their planned departure,

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Marshall Smith, who spent 37 years at NASA before moving to Starlab, told Sky News space stations were "critical" for research in microgravity. "Life support systems, they don’t work on the ground [like how] they work in space and microgravity," he said.

ISS research over 25 years shows how humans adapt biologically, medically, and technologically to space, informing future missions and scientific understanding of life beyond Earth.