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 ...

Scientists’ model indicates that dark matter inside gas giants could collapse into black holes detectable by observation.

In science fiction, twin suns mean alien skies — but in reality, binary star systems are common. Could they actually create ...

Beyond the familiar planets lies a fascinating frontier filled with icy worlds, mysterious orbits, and cosmic curiosities.

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

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

Skywatchers who saw the Venus-Jupiter conjunction saw the start of an upcoming "planet parade" in the eastern sky. Here's ...

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

It'll be an active sky over several days in August 2025, with planets visible, meteor showers and nebulas popping up. Here's ...