Scientists crunching data from NASA’s orbiting TESS planet-hunting observatory have discovered a potentially habitable Earth-sized world circling a star a bit more than 100 light-years from the sun, the first such detection by the TESS mission since its launch in 2018, astronomers announced this week.

SpaceX called off the planned launch of a Falcon 9 rocket Friday at Cape Canaveral, halting the countdown less than a minute before liftoff to allow time to perform additional ground system checkouts before the mission’s next launch opportunity no earlier than Sunday.

A Chinese Long March 2C rocket launched Monday with two satellites for Pakistan’s national space agency, extending a partnership between the two countries’ space programs.