Will humans ever live in space? Astronauts have returned to Earth after an unplanned nine-month stay at the International Space Station. They could face severe health issues.
Dolphin pod greets stranded astronauts
Flipper to the rescue: The marine mammals swarmed around the recovery team and capsule, welcoming home the astronauts shortly after they splashed down off Florida’s Gulf Coast. Glossary
Space Capsule - A small spacecraft or the part of a larger one that contains the instruments or crew.
Florida - A coastal state in the south-east of the US, between the Atlantic Ocean and the Gulf of Mexico. Though nicknamed "the sunshine state", it also experiences phenomenal rainstorms.
International Space Station - A joint project between the US, Russia, Japan, Canada and the European Space Agency.
Radiation - Energy given off when radioactive material decays. It can be extremely harmful and sometimes fatal, causing vomiting, skin damage, hair loss and cancer.
Pipe dream - Something that will never happen - that a smoker might dream about while puffing on a pipe.