The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

But because planets always appear in a line from our Earth-bound vantage, the alignment isn't anything out of the norm ... The planets in our solar system orbit the sun essentially along a ...

This may explain the strange properties of the orbits of our solar system's planets, which are not quite ... astrophysics has long been to figure out how the orbits later became out-of-round ...

then it could disprove the notion that there is a ninth planet lurking out in the darkness of our Solar System beyong Neptune. But should the orbits of the new objects follow the trend ...

Throughout much of January and February, Venus, Mars, Jupiter, Saturn, Uranus and Neptune will be visible splayed out in a long ... of all the solar system's planets. Mars, Venus, Jupiter, Saturn ...

Most of the information we have about planets beyond our solar system (exoplanets ... as it will seem to block out more of the star's light, or they might infer the planet is hotter than it ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...