5 clearest photos of dwarf planet Pluto captured by NASA
The changing faces of Pluto| The predominant color of Pluto's surface is thought to result from ultraviolet radiation from the distant Sun breaking down methane on the planet's surface, leaving a dark ...
Scientists have fiercely debated the existence of ‘Planet 9’ for a decade. Some say evidence is piling up
After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...