Live coverage of the Expedition 52 mission on the International Space Station. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Mission Reports
James Webb Space Telescope completes critical end-to-end test
NASA’s $8.8 billion James Webb Space Telescope has completed critical end-to-end testing in a giant vacuum chamber at the Johnson Space Center, proving the telescope will work properly in the deep cold of space, bring starlight to a sharp focus and precisely track its astronomical targets when launched in 2019.
