The countdown begins for the launch of the world’s biggest rocket, sitting at 120m tall.

By Noa Leach

Published: Monday, 17 April 2023 at 12:00 am


Elon Musk’s SpaceX is set to launch its Starship spacecraft and Super Heavy rocket system for the first time from the Texas Starbase, USA.

The spaceflight system is designed to carry crew and cargo to Earth’s orbit, with the aim of carrying astronauts to the Moon and Mars – including use in NASA’s Artemis 3 mission to the Moon in 2025.

But today there is no crew and it won’t reach orbit. It instead marks the first fully integrated test flight of the rocket system after successful tests of the capsule and rocket individually.

This flight aims to demonstrate Super Heavy’s ‘soft-landing’ as it hovers above the ocean just before splashdown. It will also help SpaceX test and improve the system’s design ahead of missions like Artemis 3.

When is it launching?

Starship is scheduled to launch today, Monday 17 April at 2pm BST and 8am CT/9am ET/6am PT.

The SpaceX livestream will begin 45 mins before the expected launch time. Unlike last week’s JUICE launch, which had a one-second window during which the European Space Agency could attempt lift-off, SpaceX have 150 minutes to launch Starship and Super Heavy.

SpaceX could therefore wait to launch any time within the launch window (1pm to 3:30pm BST) depending on weather. The SpaceX Twitter Feed will share new timing updates if the launch time changes from the expected lift-off at 2pm BST.

In the US, the launch window is between:

If the launch attempt is not successful today then SpaceX will try again on 18 April and 19 April.

How can I watch it?

Live coverage will begin at 1:15pm BST and 7:15am CT/8:15am ET/5:15am PT. It can be watched on the SpaceX YouTube channel or on the livestream below.