SpaceX is preparing for the first launch of history's biggest rocket today (April 20).
It comes after the company cancelled its previously planned launch last minute. Initially, the rocket was set to launch from the SpaceX facility at Chica, Texas but had to be halted due to a 'frozen valve'.
SpaceX owner Elon Musk announced the delay on Twitters, stating that "a pressurant valve appears to be frozen, so unless it starts operating soon, no launch today". However, if everything work as it should today, then we can finally expect the launch to take place this afternoon.
