Keep your letter short, focused, and interesting. In general, letters should be under 200 words, 150 or less is best; stay focused on one (or, at the most, two) main point(s); and get to the main point in the first two sentences. If possible include interesting facts, relevant personal experience, and any local connections to the issue.
Jupiterâs Moons â 67. Jupiter is swarming with at least 67 moons in orbit around it, the largest number of natural satellites around any of the planets. Jupiterâs 4 largest moons; Ganymede, Callisto, Io and Europa are known as the Galilean Moons, named after their discoverer Galileo Galilei.
Saturnâs Moons. Saturn has at least 62 moons, ranging in size from only a kilometer or less across, to the largest moon in the solar system, Titan, which is larger than the planet Mercury! Several of these moons have features that make them of interest to astrobiologists. Titan is the only moon in the solar system that has a significant atmosphere.