The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

In the early evening, look to the southwest and you'll see Venus (the brightest object in the sky after the Sun and Moon) and ...

Starting at 12:30 p.m. ET (1730 GMT) on Saturday (Jan. 25), astrophysicist Gianluca Masi of the Virtual Telescope Project ...

While claims of a “rare alignment” are overblown, you can still see up to six planets in the night sky this weekend. Here's ...

Scientists suggest an interstellar visitor may have altered planetary orbits in our Solar System, reshaping trajectories of ...

The celestial bodies in our solar system take many forms. Some are made of rock, others gas, and others even ice. The farther ...

While planets circle the sun in what's called a heliocentric orbit, they rarely fall together in what appears to the human eye as somewhat of a line across the visible horizon. Saturday is one of ...

Keep your eyes on the sky. Six planets in our solar system are coming into alignment and will be visible from Earth. AccuWeather says Saturn, Venus, Neptune, Uranus, Jupiter and Mars will be ...

Venus and Saturn are currently in conjunction, meaning the planets appear close together in the night sky from Earth. These ...

A new study suggests that a planet-sized object may have passed through the solar system billions of years ago.

The research, yet to be peer-reviewed, sheds light on what could have changed the orbits of several planets in the solar ...