Rocket Lab successfully launched four new “DiskSats” for the U.S. Space Force early Thursday morning from Wallops Island, Virginia, on an Electron rocket.

The mission, dubbed “Don’t Be Such a Square,” marked the first deployment of DiskSats, a thin, 40-inch-wide spacecraft developed by The Aerospace Corporation with NASA funding.

DiskSats’ unique flat design offers more power and surface area for instruments, and could enable very-low-altitude Earth observation by maintaining one face toward the planet.

The satellites were deployed at an altitude of 342 miles (550 km) about 55.5 minutes after launch, higher than their potential low-altitude missions, Space.com has reported.

This launch was Rocket Lab’s 20th of 2025, breaking the company’s single-year record and including both orbital and suborbital flights.