A new propulsion system feeds the same "monopropellant" fuel into electrical and chemical thrusters, potentially saving on ...
MIT researchers have shown that one fuel can power both chemical and electric spacecraft thrusters, potentially transforming ...
To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.
To assess the plausibility of alien visitors, it’s necessary to understand the obstacles that an extraterrestrial vessel would need to overcome to reach Earth ...
The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth. By Kai James / The Conversation Published May 27, 2026 8:00 AM EDT This article was ...