SpaceX fans worldwide are anxiously waiting for the first test flight of the Starship Serial Number 15 (SN15). The prototype rocket is due to launch later this evening (UK time) from SpaceX's Boca Chica facility in South Texas. Weather permitting, SpaceX's eight-hour launch window will open at 6pm BST (12pm CDT) and close in the wee morning hours on Saturday.
SN15, which is the company's fourth full-scale Starship prototype to fly, will soar to an altitude of at least 32,000ft (10km).
Elon Musk and co will then attempt to set the rocket back down on the launch pad - a manoeuvre that has so far resulted in four catastrophic explosions.
Starship SN11 was the last rocket to be blown up when it launched on March 30 but failed to stick the landing.Insurance Loans Mortgage Attorney Credit Lawyer
But even with a poor launch record so far, fans are keeping their fingers crossed SN15 will ace today's test.
Mr Musk revealed earlier this year SN15 contains "hundreds of design improvements", compared to its predecessors.
READ MORE: SpaceX Starship launch: What time will SN15 blast off from Boca Chica?
The upgrades are the main reason SpaceX has scrapped the Starship SN12, SN12 and SN13, instead opting to go straight to the SN15.
One hopeful fan tweeted: "If SN15 doesn't land, I'll explode."
Another person said: "@elonmusk you must land SN15 on Star Wars Day. May the 4th be with you!"
And a third person said: "Starting the #SN15 launch day with the 1967 Classic film "Journey To The Far Side Of The Sun".
"This is the film Starship makes me think of every time they fly