Why water's presence on Earth is a matter of hot debate among scientists.
One of the crew say they have seen "sights that no human has ever seen" after travelling beyond the far side of the Moon.

Earth

As we face the world’s greatest environmental challenges, BBC Earth brings you solutions in psychology, food, climate change, health, social trends, and technology that can make the world a more ...
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To understand how the Earth formed, you might want to start with thinking about your breakfast.
The astronauts will have medical checks and will be reunited with their families.
The four astronauts said they were returning to Earth with "so many more pictures, so many more stories".
The snap was taken aboard the Orion capsule by its commander, Reid Wiseman, as the crew head towards the Moon.
As the astronauts pass behind the Moon they will experience a moment of silence and solitude as communication with the Earth ...
BBC Studios and Samsung TV Plus, Samsung’s free, ad-supported streaming TV (FAST) service, have announced the launch of the BBC Earth FAST channel in EMEA. The channel is now available in Benelux, ...
The six-parter, showcasing how these "unsung heroes" protect nature and are "an inspiration to us all," is the brainchild of the royal, who has voiced the trailer and episode introductions. By Georg ...
The hottest project at last fall’s AFM was a $65 million movie with no stars and two directors no one had heard of. Bucking the prevailing mood of caution among buyers, “Walking With Dinosaurs 3D,” a ...