WATCH SARAH SING I LOST MY HEART TO A STARSHIP TROOPER NEXT
As part of a small three-man team, Sarah certainly isn't just along for the ride.
The 54-year-old will also have to fulfill vital duties while she is on board.
She admits that the prospect is "terrifying."
She also plans on going down in history as the first professional to sing in space.
The performance will also take place towards the end of her trip, since the body takes seven days in space to acclimatise while all the spare bodily fluids drift towards the head, giving the symptoms of a heavy cold.
WATCH SARAH SING TIME TO SAY GOODBYE WITH ANDREI BOCELLI NEXT
She has actually consulted Chris Hadfield, the US astronaut who sang David Bowie's Space Odyssey on the ISS, for advice about the unique conditions she will face.
The greatest challenge she will face is shortness of breath.
And then, finally, on September 1 Sarah will blast off from the Baikonur cosmodrome in the Kazakhstan desert.
After a six-hour flight she will spend 10 days there, orbiting the Earth 16 times daily.
When she was asked what she was hoping to get out of the trip, her passion and emotional investment was evident.
"Talking to other astronauts, they say that the emotions you feel are like nothing you ever feel on Earth," she said.
"We live in such an extraordinary place, our planet it absolutely beautiful, but we can't really see it.
"I want to understand everything better. Talking to everyone who has been up they say they do understand our planet better, seeing how delicate it is.
"We always think how unimportant we might be but I think we're incredibly important because we've been given this beautiful place to look after.
"When you're up there you see that and I want to experience that."
Sarah Brightman's new album Dreamchaser is out now
--------------------------------------------
SARAH Brightman insists she will be over the moon if she can become the first musician to perform in space during her 10-day trip to the International Space Station.
Preparation has been intense and included time in altitude chambers, being subjected to extreme G-forces and learning Russian.
She will be hoping for a performance that is truly out of this world to make such commitment worthwhile.
Would you like to receive news notifications from Daily Express?