BBC science correspondent Pallab Ghosh explains what happens if an astronaut gets ill in space.

The tanker, Veronica, was seized in a predawn operation "without incident", the US military's Southern Command says.

France says a small military contingent has arrived and more forces will be there in the coming days.

The judiciary says Soltani is not facing charges carrying the death penalty, while a rights group reports that the execution has been "postponed".

Eritrea denies the claim and accuses Ethiopia of seeking a pretext to attack, amid fears of renewed conflict.

At least four people are injured and there are also reports of extensive damage to nearby buildings, he local safety body says.

The tanker, Veronica, was seized in a predawn operation "without incident", the US military's Southern Command says.

The judiciary says Soltani is not facing charges carrying the death penalty, while a rights group reports that the execution has been "postponed".

An aircraft that crashed in November had a structural flaw that had been identified by Boeing 15 years ago, investigators say.

An aircraft that crashed in November had a structural flaw that had been identified by Boeing 15 years ago, investigators say.

France says a 15-strong French military contingent has arrived and more forces will be there in the coming days.

As the US announces the next of its plan to end the war, serious obstacles mean implementation will be difficult.

As the US announces the next of its plan to end the war, serious obstacles mean implementation will be difficult.

As the US announces the next of its plan to end the war, serious obstacles mean implementation will be difficult.

The four members of Crew-11 beamed as they stepped out of their spacecraft after a safe landing.

The four members of Crew-11 beamed as they stepped out of their spacecraft after a safe landing.

Four astronauts who left the International Space Station (ISS) a month early due to one of the crew members falling ill have returned to Earth on Thursday.

The agent was acting in self-defence after being attacked with a shovel, said the Department of Homeland Security.

Venezuela's opposition leader will meet with US President Donald Trump at the White House on Thursday.

Venezuela's opposition leader will meet with US President Donald Trump at the White House on Thursday.