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Massive Balloon the Size of a Soccer Stadium to Launch Telescope to Edge of Space to Study How Stars Form
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Canada's balloon-based SuperBIT telescope could rival NASA's Hubble
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A low-cost balloon-borne telescope promises Hubble-like images
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Is it a bird? Is it a plane? No, it’s a telescope suspended from a football stadium sized balloon developed by an international team including astronomers from Durham University. The collaboration, which also includes NASA, the Canadian Space Agency and Toronto and Princeton universities, is an ingenious solution to the problems faced by ground-based and space telescopes.
The giant helium balloon will suspend the telescope, known as SuperBIT (the Superpressure balloon-borne imaging telescope), to a height of 40 kilometres, above 99.5 percent of the atmosphere. This is vital as atmospheric fluctuations are the bane of astronomers on Earth; they distort the light that passes through the atmosphere making high-resolution imaging of space from the ground extremely difficult.
Tue 20 Jul 2021 19.01 EDT
A balloon the size of a football stadium could help astronomers get crystal-clear shots of space for a fraction of the cost of an orbital telescope like Hubble.
The secret weapon behind the SuperBIT project is a simple helium balloon – albeit one that floats up to 25 miles (40km) above the surface of the Earth and expands to a football-stadium size when fully inflated.
Developed by a consortium of researchers from the UK, US and Canada, SuperBIT (the Superpressure balloon-borne imaging telescope) is an attempt to combine the best of both worlds of orbiting and earth-bound astronomy.
Conventional ground-based telescopes have to deal with the fact that the atmosphere is very good at sustaining all human life, but annoyingly bad at letting through light from space without distorting it, making it hard to take clear pictures of astronomical objects. Orbital telescopes, like the Hubble space telescope, avoid that problem, but cost billions of dollars to ass