article_snippet.sent: The final design would be 330ft (100 metres) in diameter and 1,310ft (400 metres) long.
article_snippet.sent: Mr Kemp added that, for this large structure, it would take about 30 years to build and cost close to £200 billion ($300 billion).
article_snippet.sent: For comparison, it took more than 10 years to build the ISS, at a cost of around £67 million ($100 billion) - although this new station has 2.89 million times more volume.
article_snippet.sent: But Mr Kemp said they want to build a smaller structure first, to prove the design works.
article_snippet.sent: ‘a smaller structure will be 30 metres [100ft] in diameter, a smaller structure will create a 0.6 gravity environment and would house at least 30 people,’ Mr Kemp said.
article_snippet.sent: a smaller structure would cost between £3.5 and £7 billion ($5 and $10 billion), and could be built in the next 10 years.
article_snippet.sent: a smaller structure would take just 12 to 18 months to build, according to Mr Kemp.
highlights_snippet.sent: Washington, DC company United Space Structures  would be 1,300ft (400 metres) long, cost £200 billion ($300 billion) and take 30 years to build .
  