The object, initially thought to be a meteorite, could actually be Zond 1, a Soviet spacecraft that was destined for Venus 60 years ago.

Behind the Sun, the comet appears to show signs of acceleration beyond what is expected by gravity. And for reasons not yet ...

If it is a galaxy, it would be the oldest known galaxy in the cosmos, but it could also be a brown dwarf or an early black ...

MOST is unlike any spectroscope ever built. It can unravel the light of 2,400 celestial objects simultaneously into 18,000 ...

As 3I/Atlas neared its closest point to the sun in its orbit, the internet was abuzz with curiosity about the comet.

The 3I/ATLAS comet was first spotted in July near Jupiter after it entered our solar system from another universe. Here’s ...

Is it an alien spaceship or an ancient comet? That’s the question puzzling UFO enthusiasts, NASA, and the European Space Agency since an interstellar visitor entered our solar system last month. It ...

I/Atlas continues to head toward Earth, reaching a close distance to our sun. Here's what to know about the online discord around this phenomenon.

Interstellar object 3I/ATLAS is on the opposite side of the sun from Earth - but several spacecraft are in the perfect ...

(WXYZ) — The U.S. military shot down what it's calling a "high altitude object" on Sunday over Lake Huron, just hours after airspace was closed over Lake Michigan ...

U.S. fighter jets have shot down four high-altitude objects this month — including the first instance in which the North American Aerospace Defense Command "has taken kinetic action against an ...