RandolphNave8
أنشأ الصفحة ب'<br>Pluto was formally downgraded from planet to dwarf planet on August 24, 2006, during a meeting of the International Astronomical Union (IAU). The IAU establishe<br>Read more<br><br><br><br><br><br><br><br><br><br>Planetary Science<br><br><br><br>+1<br><br><br><br><br><br><br><br><br><br>What was the second dwarf planet?<br><br><br>Asked by Anonymous<br><br><br><br>The second dwarf planet to be officially recognized by the International Astronomical Union (IAU)...'