These linkups happen when several planets appear to line up in the night sky at once. Such parades are fairly common, ...

But it’s not just looks. Rocky composition, general size, orbital behaviors—a lot of those qualities can be the same on both ...

How do tidal forces shape a planet's orbital evolution, especially for those in the habitable zone? A recently submitted ...

Without other planets or the Moon, Earth would lose tides, gravity stability, and the conditions necessary for life.

Researchers suggest gas giants might gather dark matter until their cores collapse into planet-sized black holes.

Imagine a civilization so advanced that it can harness the energy of an entire galaxy, manipulate gravity, and explore ...

A planetary parade of six planets is visible in the morning sky through August 20, with Mercury joining Venus, Jupiter, ...

In recent years, JWST has revealed a fascinating class of never-before-seen objects, just hanging out in crowded, nebular ...

Our sun is about five times less magnetically active than other sunlike stars—effectively a special case. The reason for this ...

Penn State astronomers are using data from NASA’s James Webb Space Telescope, combined with theoretical models, to ...

In a new study, researchers at Penn State and NASA’s Jet Propulsion Laboratory analyzed when and where human deep space ...