The year was 2015. After traveling billions and billions of miles through the Erebus, New Horizons encounters the boatman, and the somber lord of the departed. The spacecraft could have been called ...

In 2006, the International Astronomical Union (IAU) voted on the definition of a planet. Famously, Pluto no longer met the criteria and was demoted to a dwarf planet. Things have been a bit of a mess ...

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The definition of a planet has been a hot topic ever since a change kicked Pluto out of our planetary lineup in 2006. Now, a group of researchers is proposing a new definition yet again—one with much ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Remember when Pluto was demoted to a dwarf planet in 2006? Well, a group of scientists is making a case for its comeback as the proper planet many of us grew up knowing. Johns Hopkins University ...

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