An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

From meteor showers to visible nebulas, August is primed to be an action-packed month for stargazers in the United States. And one of the highlights of the month? The impending meet-up of Jupiter and ...

Four planets visible to the naked eye are lining up across the western sky after sunset this week, and the window to see them at their best is closing fast. Venus, Mercury, Saturn, and Jupiter form a ...

A planetary conjunction is an astronomical event in which at least two planets – sometimes more – appear to our vantage from Earth to be close together in the sky. Both Venus and Jupiter are making ...

SIX planets will align in the evening sky this week in a rare cosmic phenomenon you’ll be able to see with your own eyes. Mercury, Venus, Neptune, Saturn, Uranus, and Jupiter will all appear ...

A collapsed lava tube detected in 30-year-old radar data from Venus may be part of a much wider network of underground caves.

With a lot of talk about space recently, have you ever wondered which are the hottest planets in the solar system? You'd think the closer you are to the sun, the hotter they must be. Now that's mostly ...

Mercury, Venus, Jupiter, and Saturn—will be visible to the naked eye. Uranus and Neptune, being much farther away, will ...

Six planets will shine together in the evening sky on Feb. 28. Here's how to get the best view before they disappear.