January 15, 2025
Our solar system orbits the center of the galaxy about every 230 million years. The Sun has completed 22 of these “galactic years.”
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BRITANNICA.COM
Why Is Pluto No Longer a Planet?
In 2006 the International Astronomical Union (IAU) demoted the much-loved Pluto from its position as the ninth planet from the Sun to one of five “dwarf planets.” The IAU had likely not anticipated the widespread outrage that followed the change in the solar system’s lineup. When the announcement
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