Astronomers have changed Pluto status from planet to dwarf planet, but it is possible that it is not a planet at all.
In a study published in the journal "Icarus", scientists have found fascinating similarities between Pluto and the 67P comet, studied by the spacecraft Rosetta of the European Space Agency (ESA) in 2004.
"We found an interesting correspondence between the estimated amount of nitrogen [a glacier on Pluto] and the amount that would be expected if Pluto were to become 67P, that of Rosetta, by the agglomeration of about one billion comets or other Kuiper-Belt objects of similar composition explored comet, would be formed, "said Christopher Glein of the Southwest Research Institute in a press release. 1
In 2006, NASA launched the New Horizons spacecraft in Pluto, which is 4.67 billion miles from Earth. Finally, in July 2015, the probe finally came close enough to the icy dwarf planet to analyze it.
The SRI study combines data from NASA's New Horizons mission and data collected by ESA's Rosetta mission.
All the excitement about the reclassification of Pluto in 2006, and we still may not know what it is. Bad Pluto.