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 ...

At 4.6 billion years old, the Solar System is our solid, secure home in the Universe. But how did it come to be? In this episode we trace the system's birth from a thin cloud of dust and gas.

wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might have memorized that there were nine planets in our solar system ...

There are many places in the universe that our hosts would love to visit with the newly mobile solar system, from stellar clusters to nebulae to a supermassive black hole. All we need is a few ...

Here’s how it works. Earth isn't alone in orbiting our sun; it's joined by a bunch of planets, moons, asteroids, and comets that we collectively call our solar system. But how much do you know ...

In our solar system, it's not the one closest to the Sun. What are the biggest planets? Trying to understanding the scale of our universe. The answer depends on how you define coldest.

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's responsible for the orbits of the planets and their satellites ...

Gareth Dorrian does not work for, consult ... affiliations beyond their academic appointment. The size of the solar system is defined by the volume of space over which the Sun’s influence ...