Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was ...
They needed some space. New research suggests Pluto may have had a “kiss” with its largest moon billions of years ago in a ...
Astronomy on MSN2d
Does Planet Nine exist?
The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...
Learn about the size, temperature, and colour of each planet, and discover why Pluto is no longer considered a planet.
A new study suggests that the origin of Pluto's largest moon was quite different than our own. Here's what you need to know.
Potentially habitable exoplanets are so incredibly common that astronomers have started to consider more unusual situations ...