Sciences, Culinary Arts and Personal That means that sometimes, the Moon is closer to the Earth and sometimes it's further from the Earth. Around once per month, every 29.53 days to be exact, the phases of the moon make a complete cycle. Not sure what college you want to attend yet? Or that it's made of Swiss cheese? Like the planets, the Moon has two types of movement: orbit and spin. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'moon.' As it moves, it spins on its axis, which also takes 27 days. How Do I Use Study.com's Assign Lesson Feature? This is the phase of the moon. lessons in math, English, science, history, and more. Over 79,000 lessons in all major subjects, {{courseNav.course.mDynamicIntFields.lessonCount}}, Astronomy Lesson for Kids: Definition & Facts, Dwarf Planets Lesson for Kids: Definition & Facts, Telescopes Lesson for Kids: Definition & Facts, Solar Eclipse Lesson for Kids: Definition & Facts, Meteorite Lesson for Kids: Definition & Facts, Nuclear Fusion Definition: Lesson for Kids, Big Bang Theory Lesson for Kids: Definition, Facts & Timeline, Space Exploration Lesson for Kids: History, Timeline & Facts, Zodiac Lesson for Kids: Signs & Constellations, Chinese Zodiac Lesson for Kids: Story & Signs, Formation of the Solar System: Lesson for Kids, Galaxy Types Lesson for Kids: Irregular, Spiral & Elliptical, Galaxies Lesson for Kids: Definition & Facts, How is a Black Hole Formed? Study.com has thousands of articles about every Even though it's much smaller than Earth and far away, the Moon affects the tides of Earth's oceans, which are the changes in sea levels that happen each day. In fact, the Moon is close enough to affect the level of seas on Earth. The surface of the Moon is covered with a thick layer of dust that has been piling up for billions of years! Enrolling in a course lets you earn progress by passing quizzes and exams. The Moon is Earth’s only natural satellite (a celestial body that orbits a planet). Already registered? Sometimes the way the Moon, the Sun, and Earth are positioned causes an event called an eclipse. When he stepped off the Apollo 11 spacecraft, he landed in a big pile of dust. What does the halo effect around the moon mean? 'Nip it in the butt' or 'Nip it in the bud'? Gases in our air on Earth act like a warm blanket that protects our planet against big and sudden temperature changes. Learn a new word every day. English Language Learners Definition of moon (Entry 2 of 2), See the full definition for moon in the English Language Learners Dictionary, Thesaurus: All synonyms and antonyms for moon, Nglish: Translation of moon for Spanish Speakers, Britannica English: Translation of moon for Arabic Speakers.

As a member, you'll also get unlimited access to over 79,000 Its diameter, or distance through its center, is about 2,200 miles (3,500 kilometers). Compared to the distance between other planets and Earth, this distance is small.