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

Mark your calendar so you can catch Mercury, Venus, Jupiter, Saturn, Neptune and Uranus in the sky at the same time.

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

This rare planetary alignment will be visible from August 10 but will be best viewed later in the month. Here’s everything ...

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

While most of the planets will be visible to the naked eye, others will require special equipment to be spotted.

Six planets will be visible in our skies for the next few days in the last “planetary parade” of 2025. Jupiter, Mercury, ...

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

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

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

Four planets — Mercury, Venus, Jupiter and Mars — will be visible to the naked eye. To catch sight of Uranus and Neptune, you’ll need a telescope or a pair of binoculars.

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