In 1771, a college without an orrery* was as behind the times as a modern university without a cyclotron. So, for £229 115. 6d., the College of New Jersey bought one of the mechanical planetariums ...
The major objects in our solar system orbit along the plane of the ecliptic, plus or minus few degrees, and it turns out most exoplanet systems are the same — pretty flat, with maybe one ...
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