British astronaut Tim Peake is about to blast off to the ISS in an historic day for the British space sector
At 11.03AM GMT, his Soyuz rocket will launch from Kazakhstan - finally docking with the ISS several hours later, at 17.23PM GMT.
Peake won't be the first Briton ever to go into space. But he is the first Brit to be selected by the European Space Agency to become an astronaut.
In fact, Peake is - technically - British astronaut number four. There is also Helen Sharman, who became the first Briton in space in 1991 thanks to a deal between Russia and British businesses. Then there's Michael Foale, who has dual British-American citizenship, who first flew with NASA in 1992 and became the first Briton to spacewalk in 1999. And lastly there is the British-South African Mark Shuttleworth. He went into space in 2002, as a citizen - the second "space tourist" paying their way into orbit.
Tributes to Peake are appearing across the internet ahead of his historic flight. Just take a look at the homepage of Google:
