The fundamental building blocks for planet formation can exist even in environments with extreme ultraviolet radiation, ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The sun has had quite a busy week hurling solar flares at our planet, causing blackouts across the globe. “After weeks of ...

An international team from Taiwan, Japan, and Australia used 40 years' worth of data from two space probes to track down what they believe are signs of this distant planet moving around our sun.

Scientists examined infrared space surveys to narrow down candidates for Planet 9. Planet 9 would be so far from the Sun that it is just not illuminated by much sunlight. The two space surveys, ...

A breathtaking new video compresses more than a decade of deep-space observation into a few seconds, revealing the hypnotic ...

At the center is the sun, a yellow dwarf star ... from the eight major planets to dwarf planets, comets, asteroids, and icy objects — revolves around it. The solar system also includes the ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

Plato, the European Space Agency's terrestrial planet hunter spacecraft, is seen after having 24 of its 26 cameras installed.

The candidate for Planet Nine displayed a tiny amount of movement, which could mean it advanced further in its orbit around the sun. Some of the strongest evidence that points to the existence of ...