PlutoSpace explorationNeptuneAstronomersSunEarthMoonSolar systemsTo qualify, the astronomers decided, an object must be in orbit around the sun (so, for instance, Earth's moon does not count, despite being considerably bigger than Pluto).Economist...
Leonard David
The debate about Pluto’s planetary status goes on, even among astronomers. Some argue that Pluto’s official planetary status should be restored. They suggest that the requirement that a planet must “clear” other objects from orbit doesn’t make sense—and that there are plenty of examples....
But, as explained above, it lost its planet status in 2006 (some researchers still argue against that decision).Today, Pluto is reclassified as a dwarf planet in the Kuiper Belt, a donut-shaped region of icy bodies beyond the orbit of Neptune. There may be millions of these icy objects,...
Size of Pluto (lower left) in comparison to Moon and Earth.(Image credit: Tom.Reding, CC BY-SA) A planetary conundrum Researchers had to ask themselves these questions: If Pluto was a planet, then did that mean Eris was one as well? What about all those other icy objects out in the...
Why Pluto may once again become a planet. While modern science has currently stripped Pluto of its title as one of the planets of our solar system it is my belief that one day it could reclaim its title. As a planet is currently defined it has to have cleared its orbit of obstructions...
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Why was Pluto a planet?Pluto:Pluto's orbit around the Sun is extremely eccentric, meaning that at times it is closer than Neptune and at times it is some four billion miles out. Pluto is very small, much smaller than Earth, meaning that it was not discovered until 1930....
Whether Pluto is a planet or not doesn't matter today, as New Horizons completes its historic visit. Today, NASA will still collect a massive amount of data about Pluto. It will still tell us part of Pluto's story and enrich our understanding of the solar system. It will still cap off...
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