If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

When you buy through links on our articles, Future and its syndication partners may earn a commission. There are currently more than 5,800 known planets beyond the solar system. Artist Martin Vargic ...

Huge, red "super-Jupiter" exoplanet orbits its star. Since astronomers first looked beyond the solar system three decades ago to discover extrasolar planets, or exoplanets, we've known that planets in ...

Curious about the strangest planets out there? Prepare to dive deep into the cosmos, where bizarre and incredible exoplanets await. These planets are so unusual that they challenge everything we know ...

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...

When two giant planets collide, an even bigger world may be born. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Based on new simulations, ...

The universe is vast — possibly even infinite — and in the scheme of things, our planet is tiny. Even in our own solar system, Earth is dwarfed by gas giants like Jupiter. But are there bigger planets ...

A star about 600 light-years away is giving astronomers a front-row view to the environments in which rocky planets like Earth form around the most abundant stars in the universe. Called ISO-ChaI 147, ...

Conditions in the early universe might have enabled rocky planets with water to form much earlier than anticipated, potentially allowing life to begin sooner too. Astrophysicists studying the early ...

About 4.6 billion years ago, a celestial cloud collapsed, paving the way for our solar system to form. Then, a nebula with strong gravitational pull took shape, kick-starting the birth of the sun. But ...

When you look up in the night sky, our moon is unmissable.Just like Earth, it's round and has a solid, rocky surface. But is our moon actually a planet? The answer is technically no — at least ...