Today, let's talk about an incredibly mysterious celestial body in the solar system — Sedna. Did you know that it takes Sedna about 11,000 years to complete one orbit around the Sun? It leisurely ...

Today, let's talk about a super mysterious celestial body in the solar system - Sedna. Did you know that Sedna takes about 11 ...

"It all works like intricate clock gears. Throw more gears into the mix and it all breaks." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. What ...

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 ...

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 ...

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 ...

In 2006, updated research led to Pluto being controversially demoted to dwarf planet status by the International Astronomical Union. The reasoning was that Pluto's location in the far-flung ...

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

The gravitational influence of dark matter on stellar motions within galaxies, particularly the high velocities of stars in the Milky Way, is the primary evidence for its existence. This influence is ...

One of the studies, published in the journal Nature Astronomy, shows that ice inside the parent asteroid melted and reacted ...