A former NASA engineer says his propellant-free engine can beat Earth’s gravity, but the real test is whether physics lets it leave the lab

A former NASA engineer claims a new engine can beat gravity without fuel. Is it a breakthrough or just a classic physics trap?
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NASA's New 'Space Gas Station' Will Change The Way Astronauts Re-Fuel

Since 2021, NASA has been working with the cryogenic system engineers at Eta Space on a project known as the Liquid Oxygen Flight Demonstration, or LOXSAT. The goal is to test cryogenic fluid ...
C&EN

How can we fuel visits to Mars?

We don’t need any advanced propulsion to get to Mars,” says Robert Zubrin, founder of the Mars Society and the astronautical engineering company Pioneer Astronautics. “We can do it with chemical ...
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Liquid vs. solid fuel rockets: What's the difference?

Throughout the history of rocketry and spaceflight, rocket engines have always used two distinct fuel types, and each has its own advantages and disadvantages. Liquid-fueled rockets store fuel and ...
Flightglobal

The battle goes on for NASA’s Ares rockets

NASA intended to reuse Space Shuttle systems for its Moon rockets but has the experience shaken its confidence… For NASA’s Constellation programme, using 25-year-old Space Shuttle flight-proven ...