We have discovered thousands of exoplanets in the last few decades, while the number of planets in the Solar System has remained at eight – but our discovery of more might not yet be over.
An elusive Earth-like planet in our solar system could finally be discovered within the next few years. Known as Planet Nine or Planet ... detected a series of objects in the Kuiper Belt ...
astronomers have noticed objects behaving strangely beyond the orbit of Neptune. These gravitational anomalies could point to the presence of a hidden, hypothetical world known as Planet Nine.
Planet Nine, a massive icy world, may be lurking at the outer edge of our solar system, awaiting discovery by advanced telescopes. "It's really difficult to explain the solar system without Planet ...