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

Apr 03, 2026
After 20 years of development, an Orion spacecraft flies with crew for the first time.
Apr 02, 2026
With launch costs slashed in recent years, one startup is targeting what it sees as the next barrier in space: making it cheaper—and easier—to actually operate there.
Apr 02, 2026
The space company is scaling its lunar plans to match NASA’s new ambitions and returning to a rapid launch cadence.
Apr 01, 2026
New rockets that were supposed to solve a persistent launcher shortage are falling short amid delays and technical setbacks.
Mar 31, 2026
Northrop Grumman plans to test a new nozzle for the Graphite Epoxy Motors (GEM) used on United Launch Alliance’s (ULA) Vulcan and Atlas rockets.
Mar 31, 2026
Virgin Galactic is set to begin ground tests of its first new-build Delta-class spaceship, paving the way for follow-on flight tests at Spaceport America in Q3.
Mar 30, 2026
SpaceX launched the 16th Transporter rideshare mission on March 30, carrying 119 small satellite payloads to orbit for government and commercial customers.
Mar 30, 2026
SpaceX has lost communication with a Starlink satellite on orbit following a March 29 anomaly, the company disclosed on social media March 30.