Powerful winds carrying metals in a planet-wide jet stream have been discovered on a hellish world where we already know it rains molten iron. For the first time, scientists have been able to map the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Our solar system ...

For years, astronomers have teased the concept of another world in our solar system, commonly referred to as Planet Nine. But there could be a whole other 'Earth-like' planet waiting to be discovered ...

SHOCKED astronomers have spotted a “rogue” planet that defies historic theories. A unique “inside out” planetary system with a distant rocky world turns our understanding of planet formation ...

Scientific convention states there are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. On August 24, 2006, Pluto ceased to be recognised as the ...

I’m a planetary scientist who was born the year of Sputnik’s launch. Over the course of my 40-year career, I’ve witnessed not one but at least five separate revolutions that fundamentally transformed ...

Stargazers will be treated to a rare alignment of seven planets on 28 February when Mercury joins six other planets that are already visible in the night sky. Here's why it matters to scientists. Peer ...

Stargazers should look to the western horizon about 30-60 minutes after sunset.