Explore how LEGO Technic Planet Earth and Moon in Orbit turns 526 pieces, gears and moving planets into a hands-on astronomy and STEM lesson.

Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System — a process that’s also applicable for other planets. There could be a ninth ...

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The size of the solar system is defined by the volume of space over which the Sun’s influence exceeds those of other nearby stars in the Milky Way galaxy. This influence derives from two fundamental ...