Launch Vehicles & Propulsion

Space launch vehicles are designed to transport payloads such as satellites, spacecraft, and cargo into low-Earth orbit and beyond. These vehicles rely on propulsion systems that generate immense thrust to overcome Earth's gravitational pull and achieve the necessary velocity for orbital insertion or interplanetary travel. The propulsion systems used in launch vehicles typically employ chemical propellants, which undergo controlled combustion to produce high-temperature, high-pressure gases that are expelled through a nozzle, generating thrust. Common propellant combinations include liquid hydrogen and liquid oxygen (used in the Space Shuttle main engines), or solid propellants (used in some rocket boosters). Advanced propulsion technologies, such as ion engines and nuclear thermal rockets, are also being explored for future space exploration missions.

News & Analysis

Dec 23, 2025
Innospace's attempt to become the first South Korean launch operator to reach orbit suffered a setback when its Hanbit-Nano rocket failed its inaugural flight.
Dec 22, 2025
United Launch Alliance President and CEO Tory Bruno has resigned after more than a decade of leading the Boeing-Lockheed Martin joint launch venture.
Dec 22, 2025
Isar Aerospace said it is gearing up for a second launch attempt of its Spectrum rocket, completing 30-sec. integrated static test firings for both stages.
Dec 19, 2025
Signals intelligence-focused satellite company HawkEye 360 has acquired Innovative Signal Analysis to enhance usage of its orbit-collected data.
Dec 18, 2025
SpaceX said one of its Starlink satellites failed on orbit, causing some space debris and now tumbling.
Dec 18, 2025
Redwire says it will furnish docking systems to The Exploration Company for use on its Nyx spacecraft under a multimillion contract.
Dec 18, 2025
From personnel to payloads, here is what will drive the coming year in space activity.
Dec 17, 2025
The U.S. Space Force has set domain awareness as its initial—and for now, sole—mission area of focus for its Commercial Augmentation Space Reserve program.