A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...

The region, known as the asteroid belt, is home to an estimated 1.9 million asteroids that are larger than 1 kilometer in diameter. This makes up the vast majority of the solar system’s space rocks.

Scientists have discovered that the 3I/ATLAS — a Manhattan-sized interstellar object that potentially has alien tech — is much larger than previously thought.... First discovered by NASA on July 1, ...