What if Earth had rings like Saturn? This fascinating thought experiment explores how massive planetary rings would change our sky, environment, and even daily life. From altered weather patterns to ...

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the mystery of why no ringed moons exist today.

February brings a rare planetary parade, with five bright planets in clear view and a special alignment of Mercury and Saturn ...

Missed January's planetary parade? February 2025 offers another celestial spectacle. Discover when, where & how to catch ...

These events, while commonplace, are often referred to as planetary alignments. The ecliptic is also the reason that we on Earth sometimes observe planets appearing to approach closely to each ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of our Solar System. The planet sizes tested were 1 percent of Earth's mass, ...

"What if the asteroid belt, instead of forming the ring of smaller ... had there been a super-Earth opposite Mars can help guide astrobiologists' research on which planetary systems may be able ...