Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

Approximately 4.5 billion years ago, a cold cloud of gas and dust buried deep in one of the Milky Way galaxy’s spiral arms started to collapse. From there, gravity worked its magic. The cloud began to ...

Fortune must have had a pretty good time when the solar nebula exploded, tossed, roared, and turned around 4.6 billion years ago. If the slightest something hadn’t gone the way it did, we wouldn’t be ...

Voyager 1 and 2 traveled billions of miles to reach the heliopause, showing how the Sun's magnetic influence marks the boundary of our solar system.

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 ...

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