Joseph channels his inner Carl Sagan to find out if discovering the mysteries of space is worth all the work, in his review ...

The discovery of 2017 OF201 is significant, as it challenges the hypothesis of Planet Nine, a hypothetical planet thought to ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our solar system.

Actor William Shatner posted on X that Tesla and SpaceX CEO Elon Musk should ask President Trump to sign an executive order to "make Pluto a planet again." Shatner made the comment when reacting to ...