Is the Earth at the center of the Universe?
The Universe is everything that exists – all the planets, moons, stars, and galaxies (groups of stars) put together. The Universe stretches out in all directions. There may be parts of the Universe that we cannot see through our telescopes, and so we cannot tell whether we are at the center of the Universe or not.
moons・・・the moonは地球の周りを回っている月ですが、a moon/moonsは惑星の周りを回っている衛星を指します。
…..put together・・・in total/全体で
in all directions・・・in every direction/四方八方に
