Fact Check: Which Is Bigger, the Earth or the Moon? the Science Behind the Viral Debate

What should you know about Fact Check: Which Is Bigger, the Earth or the Moon? the Science Behind the Viral Debate? Explore the insights here.

The Moon does not orbit Earth in a circular track. Its path is an ellipse, introducing real, measurable variations in distance every month. When the Moon reaches perigee, its closest approach to Earth, it sits roughly 363,300 kilometers away. At apogee, its farthest point, that gap stretches out to approximately 405,500 kilometers.

When a full moon coincides with perigee, astronomical institutions label it a perigean full moon, popularly known as a supermoon. A supermoon can appear up to 14% larger and 30% brighter than a micromoon at apogee. While that difference is measurable with calibrated telescope sensors, the human eye struggles to notice a 14% difference without a side-by-side reference frame. Viral reports that supermoons will "dominate the night sky" inflate public expectations, causing backyard viewers to attribute normal visual effects to supernatural orbital events.