A SpaceX Falcon Heavy launched the third and final terabit-class ViaSat-3 broadband satellite toward geostationary orbit April 29, putting Viasat on course to finish a constellation more than a decade in the making.

SpaceX is preparing to relaunch its Falcon Heavy rocket carrying the ViaSat-3 F3 satellite after strong winds and cloud cover forced a scrub earlier this week. The mission, Falcon Heavy’s first in 18 months, will deliver the final ViaSat-3 broadband ...