Metal fatigue apparently played a role in the engine explosion on a United Airlines flight over Denver Saturday, National Transportation Safety Board Chairman Robert Sumwalt said in a virtual news conference Monday night.
China launched its Chang’e 5 mission to the moon early Tuesday morning local time from the country’s launch site on Hainan Island in the South China Sea. The country is seeking to bring soil and rock samples from the lunar surface back to Earth for the first time in its history, for scientific study.