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.
Orbit: 1,070,400 km from Jupiter. Ganymede is the largest moon in the Solar System and the seventh moon and third satellite outwards from Jupiter. There are known to be 67 moons orbiting around Jupiter. The four largest moons are Ganymede, Io, Europa and Callisto, all of which were discovered by Galileo.