For centuries our solar system was the only planetary system known to humans. We had no proof other worlds existed beyond those in our own cosmic backyard, and we imagined that if other planetary ...
One of the solar system’s most fortuitous conga lines occurred in the late 1970s, when the four gas giants—Jupiter, Saturn, Uranus, and Neptune—formed a neat cosmic column, allowing the Voyager ...
On June 17, in the year 2 B.C.E, a significant planetary conjunction occurred involving Venus and Jupiter. From Earth’s perspective, these two bright planets appeared to draw so close that they would ...
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