SpaceX’s Starship rocket will be launched for a sixth test flight next week, the latest experiment by the Elon Musk-owned aerospace firm to create reusable spacecraft after a previous test resulted in a “seminal moment” for the company.

Elon Musk’s SpaceX reportedly plans to launch a tender offer next month that would sell existing shares at a price of $135 each, valuing the company at more than $250 billion.