Distant, Dim Object DeeDee May Soon Be Added To List Of Solar System's Dwarf Planets

In the farthest reaches of our solar system lies a tiny object that scientists now believe may be the latest edition to our family of dwarf planets. Observations made using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile have shown that this object, which goes by the informal name of DeeDee, is massive enough to be spherical — the criterion necessary for astronomers to consider it a dwarf planet.