As NASA prepares for the launch of its Artemis II mission, record-breaking cold and freeze warnings along Florida’s Space Coast are turning the historic journey to the moon into a race against the weather.

NASA is gearing up to launch a new crew to the International Space Station (ISS). The upcoming Crew-12 consists of NASA astronauts Jessica Meir and Jack Hathaway, European Space Agency astronaut Sophie Adenot and Russian cosmonaut Andrey Fedyaev.

With the wet dress rehearsal, essentially a critical fueling test of the Artemis 2 Space Launch System moon rocket, now back on Feb. 2, NASA said in a statement that it can no longer target Feb. 6 or Feb. 7, the first two days of its launch window. The Artemis 2 launch window originally ran from Feb. 6 to Feb. 10.

Before NASA can decide a rocket launch date for Artemis 2, the giant SLS rocket has to ace a critical fueling test known as a wet dress rehearsal.