On this Day in History in 1858: Donati’s comet becomes 1st to be photographed.
Fun Fact of the Day: The Solar System’s cosmographical boundary is defined by the outer limit of Oort Cloud. To simplify things, Sun’s gravitational dominance ends with Oort Cloud.
Fun Fact of the Day: Objects in the Oort Cloud are also referred to as Trans-Neptunian objects. This name also applies to objects in the Kuiper Belt.