Giant Swedish space balloon fizzes out: space center

Jul 07, 2011
A handout released by the Esrange Space Center (SSC) shows a balloon carrying a solar telescope at the Esrange Space Center near Kiruna. Swedish scientists were forced to halt a ground-breaking project to test the impact of stars when the balloon began leaking helium.

Swedish scientists were forced to halt a ground-breaking project Thursday to test the impact of stars when a balloon carrying an X-ray telescope began leaking helium, a space centre said Thursday.

"We sent it up without any problems, but then we were forced to take it down. It was leaking, and when a balloon leaks it loses height," said Johanna Bergstroem-Roos of the Esrange Space Centre, near Kiruna in northern Sweden.

"These things happen," she told AFP.

The PoGOLite (Polarised Gamma-ray Observer), a two-tonne telescope dangling from an enormous balloon filled with one million cubic metres of was launched at 1:57 am (2357 GMT Wednesday) from Esrange and was brought back to earth shortly after 7:00 am.

Space centre officials could not say exactly how far the balloon had gone, only saying it "did not go very far" and never made it past the mountain range on the Swedish-Norwegian border.

It had reached an altitude of about 35 kilometres (22 miles), just short of its 38-kilometre altitude goal.

The PoGoLite's aim was to study the emitted by , pulsars and black hole systems.

It was meant to drift on westward winds to Norway and onto Iceland, Greenland and Canada, scientists said on the project's website.

They even hoped for the balloon to make it all the way around the by continuing "the flight over Alaska and onwards over Russia, returning to Sweden some 20 days" after the launch.

"We reached 35 kilometres. We are hugely disappointed, and are hoping that the gondola is intact," the scientists said on PoGoLite's website, www.particle.kth.se/pogolite/ .

Bergstroem-Roos said the cause of the failure causes had to be investigated before another launch attempt could be made, adding it was unclear how much time that could take.

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