Scientists have identified 27 mysterious new objects hovering at the edge of our Solar System.

As a kid in the 1990s, I chose Saturn as my favorite planet because of its rings. They’re so perfectly circular and solid-looking, like a disk ...

Astronomers have confirmed a Jupiter-size planet less than a million years old, making Elias 2-24 b the youngest known planet and giving scientists a rare look at a world still being born. Its ...

The Sun may have swallowed a super-Earth in its early stages. A recent study suggests this event left detectable traces ...

What if I told you that Saturn and the other gas giants are not the only worlds in our Solar System to sport rings? Between Saturn and Uranus, a small icy body just 250 kilometers (155 miles) across ...

Often more than 100 million times dimmer than objects visible to the unaided eye, TNOs are so small that even with NASA’s Hubble and Webb space telescopes, they appear only as tiny points of light.

LOS ANGELES — A California-based astrophysicist presented a new theory on Monday to explain why Venus, the planet most like Earth in size, mass and structure, lacks its own moon. Call it a case of ...

Tiny worlds beyond Neptune appear to preserve the colors and compositions of their larger counterparts, offering clues to how ...

When you look up at the night sky, countless stars are twinkling. The stars visible to the naked eye all seem quiet, and at ...

In a recent study, Santos-Sanz and his colleagues used the James Webb Space Telescope to watch the same body, now known as ...

Is there life beyond Earth?This is the question for our final installment.To state the main point of this article first, the existence of extraterrestrial life has not been scientifically confirmed at ...

And an Apollo 16 mystery solved.