PRAGUE, Czech Republic ” Leading astronomers declared Thursday that Pluto is no longer a planet under historic new guidelines that downsize the solar system from nine planets to eight. After a ...

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 ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

Anyone fuming over Pluto’s demotion from full-fledged planet to dwarf planet in 2006 will be happy to hear that there is still hope. Pro-Plutonians recently suggested a new definition of a planet that ...

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A surprising number of people were outraged when a group of astronomers "demoted" Pluto from a planet to a dwarf planet in 2006. Passionate Earthlings launched protests and petitions. Popular ...

It reached Pluto in about 9 yearsUnmanned spacecraft "New Horizons" was the first human being to show the detailed image of Pluto in photographsAlthough it is reported in the news etc., NASA has ...

PRAGUE, Czech Republic ” For decades, it’s been confused with a cartoon dog and ridiculed as a puny poser. Now Pluto, the solar system’s consummate cling-on, has suffered its worst humiliation: It’s ...

PRAGUE, Czech Republic – Pluto, beloved by some as a cosmic underdog but scorned by astronomers who considered it too dinky and distant, was unceremoniously stripped of its status as a planet Thursday ...