Related Stories ・Scientists discover the closest Earth-sized planet to our solar system Another enigmatic group comprises high-inclination TNOs, whose orbits tilt at angles greater than 45°.

And being so close to the sun, it will be difficult to see. With eight planets in our solar system, they all have some very interesting traits. Here's a quick look at the planets aligning on this ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.

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 ...

This may explain the strange properties of the orbits of our solar system's planets, which are not quite perfectly circular, and all lie on slightly different planes. NASA artist’s conception of ...

The planets in our solar system orbit the sun essentially along a line across the sky in a plane called the ecliptic. For that reason, planets in our Earthly sky always appear somewhere along a ...

Despite common assumptions, the disk of our Solar System is warped, and the planets travel around the Sun in slightly eccentric (or oblong) orbits. Scientists now think that a mysterious object ...