Don't worry though—it's not like one planet simply fell out of the solar system. We'll explain what happened and also show you some tricks for remembering the order of all of the planets that ...

The next time will be May 6, 2492. That date will change if astronomers ever identify another planet in our solar system and have to add that to alignment possibilities.

The next time will be May 6, 2492. That date will change if astronomers ever identify another planet in our solar system and have to add that to alignment possibilities.

Only a handful of star systems have more than a single planet. With eight worlds, our solar system has long taken the prize for the biggest lineup. But no longer. Our corner of the galaxy now ...

Mercury is the smallest planet in our solar system. Mercury is a little more than one-third the width of Earth and has an equatorial diameter of about 3,032 miles (4,880 kilometres).

Saturn, the second-largest planet in our solar system and is the sixth planet from the Sun. Famous for its rings, Saturn was captured brilliantly by the Hubble Space Telescope in 2019.

Only eight planets call our solar system home. Or there might still be nine if some astronomers are correct about an as-yet undiscovered large body out past Neptune.

Scientists find a miniature version of our solar system, with eight planets and a sun-like star By Amina Khan Staff Writer Dec. 14, 2017 3:20 PM PT ...

This planet, Kepler 90i, brought the total number of planets circling its star to eight – just like our solar system’s octuplets.