Here is why the launch of Artemis was called off today:
A problem was detected on one of the rocket's main engines, RS-25, 40 minutes before the scheduled liftoff from the Kennedy Space Center in Cape Canaveral, Florida.
NASA said that they first noticed the 'engine bleed' when the launch team began filling the rocket's core fuel tanks with super-cooled liquid oxygen and hydrogen propellants.
The four engines are used during the rocket's core stage and needed to be "conditioned" with cryogenic propellant to bring them up to the correct temperature for launch.
One of these engines did not achieve the high-accuracy temperature as NASA expected it to.
The rocket is currently in a stable configuration and will now attempt to take off on September 2.
NASA Announces Plans To Build First Railway System On Moon First US Moon Lander Since Apollo Set To Launch Today, Human Remains On Board Send Your Name To The Moon, Via NASA's 1st Ever Robotic Lunar Rover VIPER Over 300 Indian Students Return As Quota Row Sparks Violence In Bangladesh "Jindal Group Executive Showed Porn, Groped Me On Flight": Woman To NDTV Curfew In Bangladesh, Military On Streets After 105 Die In Clashes CrowdStrike: All About The Cybersecurity Giant Behind Global IT Outage UP Government Forms Lucknow-SCR On The Lines Of Delhi-NCR The Situation At Delhi, Mumbai Airports Day After Global IT Outage Track Latest News Live on NDTV.com and get news updates from India and around the world.