New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.

Swipe Down for Full Video Story Most of us learned that the Solar System has eight planets. For many years, Pluto made it ...

NASA chief Jared Isaacman’s call to restore Pluto’s planetary status has reignited a long-running scientific debate over ...

Editor's note: This article was updated March 25 at 11:40 a.m. ET to account for the recent discovery of new moons around Saturn and Jupiter. The total number of planetary moons and small-body ...

Summer officially arrives in the Northern Hemisphere this month, bringing with it balmy evenings that invite us to look up.

Looking for a sky event this week? Check out our full Sky This Week column. May 24: Egeria slides on by After reaching superior conjunction midmonth, Mercury is increasing in visibility and should be ...

I recently received a query from one of my Atlantic Skies readers as to the difference between an occultation and an eclipse.

James Webb Space Telescope exoplanet weather observation confirms the first daily cloud cycle ever detected outside our solar system, revealing that a decade of hot Jupiter atmospheric composition ...

Elon Musk’s plan to launch 1 million AI data center satellites into orbit starting in 2028 could spark a financial ...

Our sun is a loner. It lacks a stellar companion hurtling through interstellar space with it. But we've known for a long time ...

Rooftop solar could meet 45.9% of Michigan's energy demand, but utilities profit more from expensive gas plants.

Scientists may have identified one of the Solar System’s most important “planet factories” hidden just beyond Jupiter.