Is the earth really round or flat12/6/2023 NASA also has a constant live stream that anyone can watch at any time. Pictures from satellites and other space photographic equipment show pictures of a spherical Earth. We first found out that Earth is round when the Greeks measured shadows during the summer solstice and then calculated the Earth’s circumference. Earth is the third closest planet to the sun and is an average of 93 million miles away from our central star. From these studies, we know that Earth was formed around 4.5 billion years ago and has a diameter of approximately 8,000 miles. Today, scientists use geodesy to help study the planet, this is the science of measuring Earth’s shape, gravity, and rotation. NASA (National Aeronautics and Space Administration) studies our home planet, Earth, to learn how our planet changes over time and what we can do to help it.
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