This huge astrological shift is a total game-changer. Here’s how Pluto in Aquarius will affect you—for the next two decades.

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

Are there hidden planets in our solar system? New technologies, like the powerful Rubin Observatory, brings us closer to ...

This hypothetical Neptune-sized planet would circle our Sun on a highly elongated path, far beyond Pluto. It could have a ...

Scientists have been on the hunt for a possible ninth planet in our solar system for some time ... icy body similar to Earth ...

The solar system has nine planets, but in 2006 the International Astronomical Union declared Pluto a dwarf planet, making the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Our solar system ...

Scientists recently detected carbon dioxide and hydrogen peroxide on the frozen surface of Charon, Pluto's largest moon. The researchers conducted the survey using the James Webb ...

A NASA spokesperson said via email that the image above, which appeared on the agency's website, was not the original, but "a ...

A ninth planet may exist beyond Neptune in the Kuiper Belt, a region populated by icy bodies that orbit the Sun.

Much of the understanding of the seventh planet comes from a brief flyby nearly 40 years ago, which researchers now say ...