Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

Our solar system resides inside a vast cavity, now known as the Local Bubble, which is about 1,000 light-years across. When you purchase through links on our site, we may earn an affiliate commission.

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.