Matter-antimatter annihilations produce about 10 billion times more energy per unit mass than chemical combustion (which ...

Claims of an 'arms race' involving Russia and China, reverse-engineering, and crashed alien spacecraft re-emerged this month ...

(THE CONVERSATION) On May 22, 2026, the Pentagon released a second batch of previously classified photos and videos showing what appear to be unexplained flying objects. These file dumps were the ...

Electric thruster developed by Orbion Space. WASHINGTON — York Space Systems said it has acquired Orbion Space Technology, bringing a key satellite propulsion technology inside the company as it ...

Humanity’s plans for deep-space exploration hinge on the ability to use basic resources, such as water, to propel rockets to farther destinations in the solar system. Despite decades of ...