Have you seen the Propeller in M13?
Discovered in 1714 by Edmond Halley (of Halley’s Comet fame) the globular cluster M13 is a favorite of backyard astronomers – but did you know it has a secret?
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Strange Similarities Between Titan and Triton
The solar system hosts interesting similarities in satellites as well as in many other subjects. One of the examples that can be given to these is the similarities between Titan (Saturn) and Triton (Neptune).