Hello. Today we're reporting on an incident in the International Space Station, in which five astronauts had to take shelter in an attached spacecraft as two of their Russian colleagues prepared to repair an air leak. Our science correspondent Pallab Ghosh has more. We're also reporting on SpaceX, the South Korean tattoo scene, and an unusual mortgage set-up. Don't forget to take our quiz of the week!

On 12 June, millions of new shares in SpaceX will start trading on the stock market for the first time. This initial public offering aims to raise a vast amount of money - at least $75bn (£56bn) - and gives investors the chance to buy into a business whose activities range from space exploration and satellite communication to the social media site X and the controversial AI platform Grok.

SpaceX shares will be traded on the New York-based Nasdaq market, and some of the big global investment institutions are likely to buy shares. But individuals elsewhere will also get a chance to apply to buy shares via certain investment platforms and brokers. There are more than 550 million shares available, which SpaceX has announced it hopes to sell at $135 (£100) each. 

Musk will still hold more than 80% of the voting power after the share sale, only marginally less than he currently has. He will still determine who runs the company and its overall strategy.