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  1. Only showing results from www.smithsonianmag.com

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  2. smithsonianmag.com

    Nov 5, 2024The eighth planet in our solar system was detected, not with telescopes, but through math. In 1846 , scientists had observed irregularities in Uranus' orbit, as if an invisible counterweight ...
    • Is the Phantom Planet Real?

      But the Caltech researchers calculated that a giant planet at the edge of the solar system could be acting like a "huge lever bar," its gravity torquing the solar system and causing its tilt.

  3. smithsonianmag.com

    From its perch one million miles from Earth, the James Webb Space Telescope has peered deep into our solar system to capture images of Neptune. These new views show seven of the distant planet's ...
  4. smithsonianmag.com

    Dec 30, 2024All seven of the solar system's other planets will appear together in Earth's skies in a rare alignment. ... Uranus and Neptune are too faint to see without a telescope, but Mars, Jupiter ...
  5. smithsonianmag.com

    Aug 22, 2023As the outermost planet in the solar system, Neptune is more than 30 times farther from the sun than the Earth is, and it takes a staggering 165 years to circle our star. From the outskirts of the ...
  6. smithsonianmag.com

    Jun 3, 2024Six planets—Jupiter, Mercury, Uranus, Mars, Neptune and Saturn, in that order—created a diagonal line across the dawn-lit sky from our terrestrial vantage point this morning, a spectacle that ...
  7. smithsonianmag.com

    Neptune is 30 times as far from the Sun as Earth and is the only planet in the solar system not visible to the naked eye. NASA's Voyager 2 spacecraft is the only one to have visited Neptune upclose.
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