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 ...

The Kuiper Belt is loosely defined as a doughnut-shaped swath of space beginning just beyond the orbit of Neptune and ...

An illustration of the scale of our solar system. Distances here are measured in astronomical units (AU). (Credit: NASA) Click on an article about space on Discover, and you’ll likely run into a ...

There have been many studies done to better understand how the heliosphere interacts with other elements and what its ...

Our solar system may have an outer “edge” just outside the orbit of Pluto, astronomers announced recently. Their results suggest that early in the history of the solar system, some event stripped away ...

Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

Astronomers discovered a planetoid orbiting the sun further than any known object in the solar system. Called "Farfarout," the object orbits the sun every 1,000 years. Objects like Farfarout could ...

It's equivalent to the glow of 10 fireflies spread across the entire night sky. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Did someone leave ...

The European Space Agency-led Solar Orbiter mission has split the flood of energetic particles flung out into space from the ...