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Facts about Halley’s Comet

In the world of comets, Halley’s Comet stands out for more reasons than one. Besides its visibility and relatively short orbital period, many facts about Halley’s comet have been observed by — and influenced — human societies for more than 2,000 years.

Facts about Titan – the Largest Moon of Saturn

What do you know about Saturn’s aptly named moon Titan? For a planetary satellite, Titan has many unique features, including its large size (it’s the second largest moon in the solar system) a thick and frigid atmosphere, and lakes of methane and ethane.