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How many moons are in the solar system?

Editor's note: This article was updated March 25 at 11:40 a.m. ET to account for the recent discovery of new moons around Saturn and Jupiter. The total number of planetary moons and small-body ...

One of our planets may be missing, and it could explain why the solar system looks the way it does

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...
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You, too, can build this ESP32 3D-printed solar system model, and yes, it spins

The Meridian Orrery uses an ESP32, 3D parts, magnets, and motors to build a self-updating tabletop solar system. Uses an ESP32C3 and DS3231 RTC to calculate planet positions offline after a one-time ...
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The solar system's largest moon may be heating up — offering clues to its mysterious origins

The largest moon in the solar system — Jupiter’s Ganymede — has a unique and inexplicable magnetic field. New research could ...