Scientists have recently unveiled a remarkable discovery in the outer reaches of our solar system: a space fossil located 4 ...

Astronomers have identified a small but significant possibility that a Neptune-sized planet is quietly orbiting within the ...

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.

Today, the dwarf planet Pluto orbits the sun from the edge of our solar system and its surface temperature is an inhospitable negative 378 to negative 396 degrees Fahrenheit. But a new study suggests ...

but it's certainly the discovery of a puzzle for which a planet is a likely solution." Related: Scientists Discover New Dwarf ...