The object, similar in shape to a cigar or a pancake, was the size of an asteroid and ... than what we’ve learned from the actual planets in the solar system,” Seligman said.

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 ...

The six found so far are roughly two to three times the size of Earth, but with densities closer to the gas giants in our own solar system. Pitts said most of the planets are smaller than Neptune.

the amount that made it through the filament gas was enough to match what was suggested by the meteorite findings but not enough to decimate the Solar System. The size of this hypothetical ...

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 ...