In the search for extraterrestrial life, researchers have hinted at the idea that advanced alien civilizations may be ...

Interstellar comet 3I/ATLAS has gone from obscure visitor to front‑page mystery, as a cascade of new images reveals behavior ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The ...

Though this hunt came up empty, the fact that 3I/ATLAS is only the third known object found in the solar system after ...

Abstract: This article is concerned with the design of the distributed prescribed-time unknown input observer (DPTUIO) for a class of linear time-invariant systems, which we refer to as the target ...

The UFO reporting centre CENAP located in western Germany this year recorded more sightings by puzzled citizens than ever ...

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an ...

Abstract: In this paper, we apply the recently developed generalized parameter estimation-based observer design technique for state-affine systems to the practically important case of linear ...

Within minutes, activists surround the agents; blowing whistles, shouting down law enforcement and gathering vital bits of information that could help document the suspect and the agents. Sometimes ...

Something very significant has been happening in plain sight, and almost no one seems to be noticing. Over the past few years, there have been televised congressional hearings, repeated news segments ...

If aliens are out there, why haven’t we heard from them? That’s the question at the center of Pop Mech’s new story, “Aliens Probably Exist—But They’re Staying Silent For a Reason, NASA Scientist ...