Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray rocks ...

Comet 3I/ATLAS, a remarkable cosmic entity, began its journey far beyond our solar system, potentially expelled by a cataclysmic event from another star system. It made headlines when it approached ...

3I/ATLAS captured the world's attention last month as the comet raced past the Earth, but some believed that it could have ...

When interstellar visitor 3I/ATLAS exhibited some peculiar movements, speculation arose regarding potential alien origins.

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a ...

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets. When you purchase through links on our site, we may earn an affiliate ...

Some 70,000 years ago, when humans and Neanderthals shared the planet, an alien star streaked through the outer edges of our solar system and jostled its contents, astronomers say. In a study of ...

Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought ...

Aliens may have lived in our solar system, according to new research. NASA scientists have unveiled evidence that the dwarf ...

The James Webb Space Telescope has captured a belching protostar in its infancy. By studying the dust grains whirling around it, astronomers hope to better understand how solar systems like our own ...