Video: Time lapse of ATV’s final departure from ISS

Riding on its side aboard a rail car, a Proton rocket trekked to its launch pad Tuesday at the Baikonur Cosmodrome in Kazakhstan with a Eutelsat television broadcast satellite ready for liftoff Friday.

The James Webb Space Telescope is at risk of another launch delay beyond the mission’s current target launch date in March 2021, the Government Accountability Office said this week.

Ground crews loaded time-critical experiments, including 20 mice to help scientists study muscle atrophy, into SpaceX’s commercial Dragon cargo capsule Thursday, a day before a launch planned from Cape Canaveral toward the International Space Station.