Upcoming launches this week involve seven missions, four countries, and five launch vehicles. By Sean Yoder.

Seven missions, four countries, and five launch vehicles make the week of April 20 one of the more diverse on the 2026 manifest. GPS III SV10 carries the week's most technically significant payload in its first-ever GPS laser communications demonstration, while South Korea's ADD vehicle attempts its first complete four-stage orbital flight. Rocket Lab pulls double duty with missions from both hemispheres, SpaceX sustains its relentless Starlink cadence with two SSO deployments from Vandenberg, and Russia closes the week with another steady Progress resupply run to the International Space Station.

Seven missions, four countries, and five launch vehicles make the week of April 20 one of the more diverse on the 2026 manifest.

GPS III SV10 carries the week's most technically si.