Space. It's really, really big. How big is it? Well, according to astronomers, the observable universe is around 92 billion light-years in diameter, but that's all we can see (hence the word ...

Every planet in our solar system is essentially round. But out in the universe, are there any planets that aren't spherical? Technically, planets are round, by definition; they need to have enough ...

As telescopes have become more powerful, it’s turned out our solar system is not the only game in town: There are millions of ...

Our solar system and galaxy were the first objects of study for what was going on in the universe. Among the various ...

Learn how exoplanets are discovered, what makes planets beyond our solar system unique, and how they drive the ongoing search ...

For centuries our solar system was the only planetary system known to humans. We had no proof other worlds existed beyond those in our own cosmic backyard, and we imagined that if other planetary ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An artist's impression of the four space telescopes of the LIFE mission reflecting light towards ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A new mission concept that would see a fleet of telescopes probing rocky planets in their stars' ...