Our moon is not the biggest moon in the solar system — not by a long shot. In fact, the Moon is only the fifth biggest satellite in our solar system, wedged right between Io and Europa in size. The ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Gareth Dorrian does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

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, announced ...

To answer this question, we have to go back in time. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. If you've ever gazed at a model of the solar ...

Eric Mack has been a CNET contributor since 2011. Eric and his family live 100% energy and water independent on his off-grid compound in the New Mexico desert. Eric uses his passion for writing about ...