Persevering through a global pandemic, a last-minute earthquake, and the trials of a rocket launch, NASA’s next Mars rover — named Perseverance — took off from Cape Canaveral Thursday on a nearly seven-month journey to the Red Planet with sophisticated science instruments, technology to collect samples for to Earth, and the first interplanetary helicopter that could produce a “Wright Brothers moment” on another world.

Delays have set up the possibility of up to three rocket launches this weekend from different pads along Florida’s Space Coast, including two SpaceX missions on Sunday that could set a company record for the shortest span between two Falcon 9 rocket launches. But in the world of ever-changing launch schedules, numerous factors such as weather and technical issues could thwart launch plans this weekend. 

SpaceX test-fired a Falcon 9 rocket Tuesday at Cape Canaveral for the company’s next launch, which is set for takeoff Monday at around 9:56 a.m. EST (1456 GMT). The rocket will launch with the next batch of SpaceX’s Starlink broadband satellites, the company’s first launch since early August. There is an 80 percent chance of favorable weather for launch Monday.