The Zoo Hypothesis suggests that aliens may deliberately avoid contact with Earth, observing the planet instead.

Contrary to allegations that 31/ATLAS is potentially hostile alien tech, the Manhattan-sized comet could provide potentially ...

It’s not the first time he has theorised an alien origin of a comet. There have only been three comets identified as coming ...

The month brings a spectacular lineup of celestial sights—including a rare chance to see Mercury without a telescope and a ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

I/ATLAS is rich in carbon dioxide and challenging comet-theories. NASA's latest findings reveal why this interstellar visitor ...

The comet, called 3I/ATLAS, is the third known interstellar object that has come through our solar system. As it flies deeper ...

NASA and ESA say 3I/ATLAS poses no threat to Earth. We explain its nickel-heavy readings, IAWN’s training drill, and why the Harvard alien claim lacks proof.

"If the object is an alien spacecraft slowing down, and the anti-tail is braking thrust, then this change from anti-tail to ...

Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete ...

A viral claim says Earth has two moons — but does it really? Here’s what’s orbiting our planet and what Nevadans can actually ...