It's set to revolutionise the way we view the Earth from space. Two special cameras, designed and built by scientists in South Oxfordshire, have blasted off to the International Space Station, ready to reveal video and images of our planet, never seen before.
Cary Johnston took a trip to the final frontier.
More top news
A husband is appealing for help after thieves broke into his house in Sussex and stole his dead wife's wedding rings
Sunday's weather for the east with Philippa
Sunday's weather for the west with Philippa