British singer Sarah Brightman has announced that she is postponing plans to go into space as a paying guest aboard the International Space Station. She was set to launch on the September Soyuz TMA-18M mission with Danish astronaut Andreas Mogensen, KG5GCZ, and Russian cosmonaut Sergei Volkov, RU3DIS.

There had been some speculation that Brightman might use Amateur Radio during her ISS stay; she apparently would be eligible to do so using the GB1SS call sign. The British soprano is reported to have paid $52 million to be a “spaceflight participant” for 10 days.

Brightman said she was putting her spaceflight on hold for personal and family reasons, and she has postponed her cosmonaut training and flight plans.

“Since 2012, Sarah has shared her story of a lifelong dream to fly to space,” said Eric Anderson, Co-Founder and Chairman of Space Adventures Ltd, which arranged the flight. “We’ve seen firsthand her dedication to every aspect of her spaceflight training and to date [she] has passed all of her training and medical tests. We applaud her determination and we’ll continue to support her as she pursues a future spaceflight opportunity.”