News desk: 50 years after the Apollo 11 mission, the US space research agency NASA has delayed the plan to send a rocket to the moon. The Artemis mission to the moon has been delayed for at least four days due to engine problems, Reuters reported. One of the main engines of the rocket's Space Launch System (SLS) malfunctioned on Monday morning local time. This engine basically keeps the engines cool when the rocket heats up due to high speed. But due to a mechanical fault, it could not cool the engine as expected. The 32-story rocket and its Orion capsule await launch from the Kennedy Space Center in Cape Canaveral, Florida. NASA has not announced a new date for the rocket's launch. However, they said that they will try in the second phase from next Friday (September 2). But whether the launch is possible on schedule depends on how quickly engineers can fix the engine problem. The next possible launch date is September 5 (Monday).