Even intense exercise by astronauts cannot compensate for muscle atrophy caused by microgravity. Atrophy occurs, in part, by way of an underlying mechanism that regulates calcium uptake. Recent research has shown exposure to spaceflight alters the uptake of calcium in muscles. However, the molecular mechanisms that drive these changes are not well studied.

Researchers at Ames Research Center investigated these mechanisms by applying machine learning (ML) to identify patterns in datasets on mice exposed to microgravity. ML methods are particularly effective in identifying patterns in complex biological data and are suited for space biological research where small datasets are often combined to increase statistical power.

Boeing's CST-100 Starliner, set to take its first humans on board during the Crew Flight Test mission next month, was transported from Boeing's Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on a 10-mile trip to Cape Canaveral Space Force Station.

It arrived at United Launch Alliance's Vertical Integration Facility early Tuesday where it was placed atop an Atlas V rocket ahead of the planned launch from Canaveral's Space Launch Complex 41 as early as May 6. The capsule will take NASA astronauts Butch Wilmore and Suni Williams on a planned eight-day mission to the International Space Station.

Boeing completed fueling its spacecraft at the Starliner production facility adjacent to KSC's massive Vehicle Assembly Building earlier this month.

"Samples were taken and specialized tests were conducted throughout the propellent loading process to ensure the safety of the team performing the operation and the safe operation of the spacecraft on orbit," said Mark Sorensen, Starliner CFT Crew Module lead.

Before it left the building, Boeing performed a final weigh-in that also acted as the center-of-gravity check.