Twenty years after Pluto lost its planetary status, the debate continues as scientists still disagree over what defines a ...

The discovery of the Kuiper Belt revealed thousands of icy objects near Pluto, challenging its status as a planet. After the ...

On the 20th anniversary of Pluto’s infamous demotion, Mike “Pluto Killer” Brown explains why any reversal of that decision ...

Scientists have recently unveiled a remarkable discovery in the outer reaches of our solar system: a space fossil located 4 billion miles past Pluto, covered in unidentified organic molecules. This ...

Twenty years after Pluto became a dwarf planet, people are still fighting over its status. Experts explain why the debate ...

M onday, August 24 marks the 20th anniversary of the International Astronomical Union (IAU) vote to adopt a formal definition ...

February 18 marks the discovery of Pluto by astronomer Clyde W. Tombaugh. The discovery reshaped the understanding of the solar system, as Pluto was long considered the ninth planet until the ...

Pluto was downgraded from a planet to a dwarf planet in 2006 by the International Astronomical Union. The main reason for Pluto's demotion is that it's not able to "clear its orbit of debris." Other ...

Since it was stripped of planetary status, Pluto’s defenders have been fighting the decision – and they’re only getting more passionate ...

Unpopular opinion time, Pluto being reclassified as a dwarf planet was a great thing for our understanding of the solar ...