How big is the moon?
Another simple assumption to keep in mind is that the radius of the Moon is about one-fourth of that of the Earth. The Earth is nearly four times larger than the Moon. “James Webb space telescope”
The moon of Earth is the most luminous star in the night sky. How large is the moon, though? The moon’s average diameter is 2,159.2 miles and its average radius is 1,079.6 miles (1,737.5 kilometers) (3,475 km). According to NASA, the moon is less than a third the breadth of Earth in comparison. The circumference of the moon at its equator is 6,783.5 miles (10,917 km).
The moon appears huge at first glance, but that is only because it is the closest giant planet to us, being on average 238,855 miles (384,400 km) distant.
The moon is somewhat bigger than one-fourth of Earth’s size (27%) compared to other planets and their moons, which have a significantly smaller ratio (1:4). The moon of Earth is the solar system’s fifth-largest moon.
According to a NASA statement, “If Earth were the size
of a nickel, the moon would be nearly equal to the size of a coffee bean”
With the launch of the James Webb Space Telescope, a collaboration between NASA, the European Space Agency, and the Canadian Space Agency, a new era in astronomy has begun (Canadian Space Agency). At 10:30 am, the first spectroscopic data and full-color photos from the telescope were made public. Tuesday, July 12, 2022, from NASA’s Goddard Space Flight Center in Greenbelt, Maryland, at 03:30 EDT (14:30 UTC).
The edge of the nearby, young star-forming area NGC 3324 in the Carina Nebula may be seen in this scene of “mountains” and “valleys,” which is dotted with sparkling stars. This image, which was taken by NASA’s brand-new James Webb Space Telescope in infrared light, for the first time makes apparent previously hidden zones of star formation.
The moon has a surface area of around 14.6 million square miles (38 million square kilometers), which is less than the whole surface of Asia (17.2 million square miles or 44.5 million square km).
The moon measures 7.35 x 1022 kg or approximately 1.2% of the mass of the Earth. In other words, the Earth is 81 times heavier than the moon. 3.34 grams per cubic centimeter (g/cm3) is the moon’s density. The density of the Earth is almost 60% lower.
A human would weigh six times less on the moon than they do on Earth because the gravitational pull of the moon is only around 16.6% of that of the Earth. A person holding 45 kilograms would be 100 pounds. yet weighs only 16.6 lbs. in lunar orbit. Long jump competitions on the moon’s surface would undoubtedly be fascinating because a person with a 10-foot vertical jump on Earth would be able to jump nearly 60 feet on the moon.
GRAIL project leader Maria Zuber of the Massachusetts Institute of Technology said in a statement that the moon “wears its gravity on its sleeve more than any other celestial body we know of”. We can correlate significant changes in the gravity field with surface topographic features like craters, rilles, or mountains.
Despite being the nearest and one of the longest-researched astronomical objects, the moon is still being probed by researchers for information.
As stated by Noah Petro, deputy project scientist for NASA’s Lunar Reconnaissance Orbiter (LRO) mission, “the moon is the Rosetta Stone by which we comprehend the rest of the solar system” (opens in new tab).