#3156: Planetary Rings

XKCD comic, described below.
Transcript
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[On the left side of the single panel, a table with words and checkboxes:]

Planet Rings? [Underline]

Mercury ☐

Venus ☐

Earth ☑ [Red]

Mars ☐

Jupiter ☑

Saturn ☑

Uranus ☑

Neptune ☑

[On the right side of the single panel, a drawing of the Earth from space, with Africa in view. Many dots represent the satellites, and most of them are in an ellipse. An arrow points to it:]

Geostationary satellite belt

[Caption below the panel:]

Astronomy fact: a century ago, Earth didn't have rings, but we have one now! It's where all the satellite dishes are pointed.


(Sourced from explainxkcd.com)

If you don't know where you are on Earth, the angle of satellite dishes can help constrain your latitude. If some of them are pointing straight up, you're probably near the Equator, right under the ring.

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