The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star.

After Friday's spectacle, a "planet parade" of this size won't appear in the night sky for several years, experts say.

With a sun more than 4.5 billion years old, our solar system is considered "middle-aged," and the pictures of what it might ...

Everybody loves a parade. Most people who live in chillier climes aren’t exactly rejoicing when February rolls around — but ...

Another finding was how dramatically the planets varied in brightness over just three years. The team discovered that PDS 70 ...

On Feb. 28, seven planets—Mars, Jupiter, Uranus, Venus, Neptune, Mercury, and Saturn—will all grace the early evening sky.

It is being called a "planetary parade" as seven planets are expected to be seen in the Earth's night sky on Friday, ...

A spectacular solar display will be seen on Friday, Feb. 28, as seven planets will be visible through binoculars, a telescope or even the naked eye during the evening's full "planet parade." ...

Whether it's rivers cutting through earth, lava melting through rock, or water slicing through ice, channels all twist and bend in a seemingly similar back-and-forth manner. But a new study has ...

Mercury, Venus, Mars, Jupiter, Saturn, Neptune and Uranus could be visible, but not all can be seen by the naked eye.

Beginning around sunset, Saturn will be situated closest to the horizon, followed by Mercury, Venus, Jupiter and Mars higher ...