Follow the key events of the Falcon 9 rocket’s ascent to orbit with the another set of 10 next-generation satellites for Iridium’s voice and data relay fleet.

A Russian Proton rocket topped with a commercial U.S.-built communications satellite for AsiaSat is standing on a launch pad in Kazakhstan for liftoff Thursday.

Launch companies and U.S. Space Force range officials at Cape Canaveral are reassessing long-standing weather rules, looking at beefing up rocket defenses against lightning, and considering strategies to prepare for two different launch windows on a given day to guard against weather delays, something SpaceX may demonstrate with a Falcon 9 launch early Thursday.