Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

Triton isn’t just any moon – it’s one of the most mysterious objects in the entire solar system. In this video, we explore what makes Neptune’s largest moon so strange, from its backward orbit and icy ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Such events occur roughly every one to two years, on average. Update: Today's livestream of the solar system planets will now begin at 12:30 p.m. EST (1730 GMT). Take a grand tour of the solar ...

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago. The find ...

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse ...

Astronomers using planet-hunting satellites have discovered a rare solar system with six planets moving completely in sync with one another, as if they were untouched by any outside force since ...

Our solar system may ... the outskirts of the solar system is the activity within the Kuiper Belt, an unusual clustering of icy bodies -- including comets and dwarf planets -- which stretches ...

The study shows that even an 0.1 percent change to Neptune’s orbit could completely destabilize our solar system. Luckily, it won’t happen in our lifetime. You probably already know that ...

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 ...

Astronomers have discovered a rare solar system with six planets moving in sync with one another. Estimated to be billions of years old, the formation 100 light-years away may help unravel some ...