The eight planets in our solar system orbit the sun in roughly the same plane, because they all originally formed ... all of the time – aside from weather – is the difference in orbital periods ...

The planets are not exactly lined up, so they appear in an arc across the sky due to their orbital plane in the Solar System. During clear nights, all of the planets except Mercury should be ...

ESA's Solar Orbiter has begun to leave the orbital plane of the solar system and will soon be the first probe ever to look at the poles of the sun. The European Space Agency announced this on ...

This strange object near the solar system's edge may be a rare example of the 3-body problem in our own cosmic neighborhood.

We've never seen the shadowy spacecraft while in orbit, and still barely know what it's up to up there. The United States Space Force just offered a rare glimpse of its shadowy X-37B space plane ...

Prevailing solar system formation theories indicate that ... and there is a seven-degree difference between its orbital plane and Mercury's. These deviations from the 'ideal' orbit are ...

Once its rings vanish from sight in March 2025, Saturn will look like a pale yellow sphere through most telescopes.

Gravity provides the force needed to maintain the stable orbit of planets around a star and also of moons and artificial satellites around a planet. The moons around planets in the Solar System ...

A planetary parade is in store for the end of February, just over a month since the last one. If you missed January’s spectacle, make sure you tune in to this one. Here’s what you need to ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational field keeps many other objects – planets, dwarf planets, asteroids and comets – in orbit around it.