Space missions in the future could travel to Mars, asteroids and the outer solar system by riding on nuclear-powered rockets, thanks to a new design that utilizes energy from the nuclear fission of liquid uranium to heat propellant.

As SpaceX's Starship successfully completes its 11th test flight, take a look at the world's largest rockets ever built.

In preparation for future returns to Starbase, the ship on Flight 11 will perform a "dynamic banking maneuver" and test subsonic guidance algorithms prior to its final engine burn to brake for splashdown. If all goes according to plan, the flight will end with a controlled water landing in the Indian Ocean approximately 66 minutes after liftoff.

With the investigation closed and modifications in place, Firefly says it is turning its attention to Alpha Flight 7. That mission will be the company's next chance to demonstrate the rocket's progress as it works to establish Alpha as a competitor in the small-satellite launch market.

Orienspace, a private Chinese rocket maker, successfully launched its Gravity 1 carrier rocket on Saturday morning, marking the second flight of what is considered the world's largest and most powerful solid-fuel rocket.

Seoul, South Korea (CNN) — Kim Jong Un on Monday watched a test of North Korea’s new high-thrust rocket engine, an event that sets the stage for Pyongyang to test its newest intercontinental ballistic missile (ICBM), the Hwasong-20, which state media ...