Moon key data The Moon, Earth’s sole natural satellite, constitutes a critical reference body for comparative planetology due to its well-preserved geological record and dynamically coupled evolution with Earth. Its mean geocentric distance of 384,400 km varies between363,300 km (perigee) and 405,500 km (apogee) owing to its orbital eccentricity (~0.055). These variations modulate tidal amplitudes […]

The Range In the context of American spaceflight, “the Range” refers to the launch range — the military-operated safety, tracking, and control infrastructure that oversees rocket launches. Its job is to ensure that every launch is safe for the public, property, air traffic, and maritime traffic. Although the United States has several launch ranges, the