The idea sounds like pure science fiction: a giant cannon that hurls satellites toward orbit at 28,400 km/h, using raw ...

Recent voices have urged the United States to violate the Outer Space Treaty (OST), the binding principles of humanity’s use of outer space, by engrossing private industry for advancing U.S. space ...

Rockets are one way to get things into orbit – but there's a growing number of alternatives in development that aim to do things significantly cheaper, by accelerating launch vehicles to hypersonic ...

Orbital mechanics can be a bit counter-intuitive. We have to slow down an orbiting space craft to convert kinetic energy for gravitational energy. The orbital altitude is raised at its highest point ...

DULLES, Va.--(BUSINESS WIRE)--Orbital ATK, Inc. (NYSE: OA), a global leader in aerospace and defense technologies, announced today that the M829E4 Advanced Kinetic Energy 120mm tactical tank cartridge ...

I have kind of a mental disconnect when trying to understand how orbits work. I know, from doing a lot of reading, that a spacecraft in orbit around a body like Earth can increase its orbital height ...

DULLES, Va.--(BUSINESS WIRE)--Orbital ATK (NYSE: OA), a global leader in aerospace and defense technologies, announced today that the company was awarded a $16 million contract with options for the ...

Orbital-free density functional theory (OFDFT) represents a promising reformulation of quantum mechanics for materials and molecular simulations. By expressing the kinetic energy solely as a ...