SpaceX's Starship rocket, the largest and most powerful rocket ever built, launches for the first time. It explodes four minutes into flight.

Starship is a two-stage, fully reusable, super heavy-lift launch vehicle under development by American aerospace company SpaceX. Currently built and launched from Starbase in Texas, it is intended as the successor to the company's Falcon 9 and Falcon Heavy rockets, and is part of SpaceX's broader reusable launch system development program. If completed as designed, Starship would be the first fully reusable orbital rocket and have the highest payload capacity of any launch vehicle to date. As of 28 May 2025, Starship has launched 9 times, with 4 successful flights and 5 failures.

April 20 is the 110th day of the year in the Gregorian calendar; 255 days remain until the end of the year.