A bubble of coolant leaked out of a radiator attached to the International Space Station (ISS), jeopardizing an ongoing spacewalk by two Russian cosmonauts on Wednesday.
An uncrewed Soyuz MS-23 launched today at 7:24 p.m. ET on a two-day journey to the International Space Station, where it will replace a damaged Soyuz capsule that sprung a coolant leak this past December.