New 'Mini-Pluto' discovered with atmosphere beyond Neptune

A new tiny ice world has been discovered beyond Pluto surrounded by a thin atmosphere, scientists revealed.
AOL

'Ice giant' planets Uranus and Neptune might not be full of ice after all

The Hubble Space Telescope has peered at Uranus, left, and Neptune to study the so-called "ice giant" planets, but little is known about their interior composition. - NASA / ESA / M. Showalter / L ...
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Solar System Might Have A Hidden 'Planet Y'. What We Know

Astronomers have discovered fresh evidence suggesting the possible existence of an unseen planet in the far reaches of our solar system. The study, published in the Monthly Notices of the Royal ...
THE WEEK

Possible dwarf planet found at edge of solar system

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory about the possibility of a giant ninth planet. The dwarf planet's ...