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

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, ...

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.

What makes 3I/ATLAS especially intriguing is that the comet might be three billion years older than our entire Solar System.