Imagine predicting an entire planet's existence with nothing but math, and then finding it right where the numbers said it would be. The story of Neptune's discovery is unlike any other in astronomy.

Neptune has a complicated life story, and its moon Nereid might be the only one left standing from the planet’s ...

Astronomers used a telescope in Hawaii to find a new object on the outer edges of our solar system, helping to fuel evidence of a long-standing theory about Planet Nine, or Planet X. For years, ...

This goes against the previous theory, which has long suggested that Nereid is actually an object captured from the Kuiper ...

If you have questions you would like answered on Astro Brief, email them to Dr. Mike Reed at mikereed@missouristate.edu. Astro Brief is a podcast collaboration between KSMU, the Missouri Space Grant, ...

For 70 years, astronomers have debated if the Neptunian moon of Nereid was formed in place or captured. New research suggests ...

Scientists may have uncovered a bizarre new state of matter deep inside Uranus and Neptune, where atoms behave in unexpected ...