Arlington, Va.–A team of astronomers has announced the discovery of some of the smallest planets yet detected beyond our solar system: two worlds that represent a new category of extra-solar planets, ...

Astronomers have directly spotted a rare young planet, WISPIT 2b, still forming within the gap of a dusty ringed disk around ...

A planet's appearance is determined by its composition and atmospheric conditions. Inner planets are rocky due to the Sun's heat, while outer planets contain more gas. Atmospheric gases and surface ...

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of the ...

We are all familiar with the various elements that make up our own little world. Of course, there is the air that we breath and need to survive, which is made up of about 78% nitrogen, 21% oxygen, and ...

Thanks to NASA's Hubble telescope, planet HD 189733 b has become the first planet outside the Solar System to have its color directly measured -- and, like Earth, it's blue! Unlike our home planet, ...