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Planet X: Could Solar System hide a mysterious giant?A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union reclassified Pluto as ...
Astronomy on MSN12h
Where is the solar system heading?The Sun, the planets, and all else that constitutes the solar system are hurtling toward the star Lambda Herculis, some 370 ...
If Brown’s hidden world is real, Rubin will almost certainly find it or strong indirect evidence that it exists. “In the ...
Learn about the size, temperature, and colour of each planet, and discover why Pluto is no longer considered a planet.
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