Now, a Chinese test satellite called Xinjishu Yanzheng-7 (XJY-7) has been spied during its final reentry, offering some of ...

A massive comet traveling through the solar system is much larger than previously thought and could be a remnant of alien ...

I/ATLAS mysterious pulse sequence and mothership small probes release claim has gained attention after reports suggested the interstellar object emitted structured signals at 1420 MHz. With theories ...

While most scientists believe it’s a natural comet, one Harvard astronomer has suggested its unusual features could hint at ...

Everything we see around us, from the ground beneath our feet to the most remote galaxies, is made of matter. For scientists, that has long posed a problem: According to physicists’ best current ...

More than two decades after it was first discovered, a mysterious ‘underwater city’ off the coast of Cuba is back in the ...

A gamma ray glow at our galaxy’s center has puzzled scientists for almost two decades. New computer simulations back the ...

Keck II telescope observations of interstellar object 3I/ATLAS found "evidence for a puzzling anti-tail extension" pointing ...

A UN-endorsed group focused on planetary defense has locked onto 3I/ATLAS as the mysterious interstellar visitor fuels alien ...