Live coverage of the countdown and launch of a Falcon 9 rocket and Dragon spacecraft on a resupply mission to the International Space Station. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Falcon 9
Falcon 9 rocket rolled to launch pad with classified payload
Working overnight on Florida’s Space Coast, SpaceX technicians transferred a two-stage Falcon 9 rocket from the company’s commercial hangar a quarter-mile up the ramp to launch pad 39A early Saturday, positioning the kerosene-fueled booster for liftoff Sunday with a classified payload for the U.S. government’s National Reconnaissance Office.
Members
Q&A with Sara Seager, deputy director of science on NASA’s TESS mission (members only)
Sara Seager is an astrophysicist and planetary scientist at MIT, and she serves as deputy science director on NASA’s Transiting Exoplanet Survey Satellite, which aims to find planets around stars relatively close to the sun, searching for worlds that are ideal follow-up targets for missions like the James Webb Space Telescope.
