An object the size of a grapefruit continues to orbit Earth, 68 years after it was launched. This is Vanguard 1, the first American satellite to successfully reach orbit, launched on March 17, 1958, during the early years of the space race with the Soviet Union. Although no one has communicated with it since 1964, it is still tracked precisely by orbital object catalogs, much like a customer service department that never closes. Vanguard 1 was the fourth artificial satellite to be launched successfully after the Soviet Sputnik 1 and 2, and the American Explorer 1. It was small—about the size of a grapefruit, with a diameter of 16.3 centimeters and weighing just 1.5 kilograms. Despite its six thin antennas, which made it look more substantial, the satellite itself was compact. The nickname "grapefruit satellite" was given by Soviet leader Nikita Khrushchev, who mocked its small size. However, its size concealed a major technological innovation: it was the first satellite to use solar cells for power. This advancement allowed it to remain in orbit far longer than its predecessors. Unlike earlier satellites, which burned up in Earth’s atmosphere within months or years, Vanguard 1 has stayed in orbit for more than six decades. The reason lies in its high altitude. Launched into an orbit ranging from 654 to 3,969 kilometers above Earth, it was far above the atmosphere, where drag is minimal. This allowed it to avoid the pull of Earth’s atmosphere that caused other satellites to fall. Its solar cells provided power for six years, far outlasting the battery-powered signals of earlier satellites, which only lasted a few weeks. The last signal was received in 1964 from a tracking station in Quito, Ecuador, after which it has remained silent. Despite its lack of communication, Vanguard 1 has contributed significantly to science. By observing the satellite’s orbit, researchers discovered that Earth is not a perfect sphere but slightly flattened at the poles and bulging at the equator—a "pear-shaped" Earth. This finding was unexpected and marked an important advancement in geodesy, the study of Earth’s shape and gravitational field. Today, Vanguard 1 remains in NASA’s orbital catalog, identified by the numbers 1958-002B and SATCAT No. 00005, as one of the first objects ever tracked in space. Estimates suggest that Vanguard 1 will remain in orbit for about 240 years, until the end of the 22nd century. While this projection is uncertain, it highlights the satellite’s remarkable longevity. Some scientists even speculate about the possibility of retrieving it, though no official plans have been made. For now, the small, silent grapefruit continues its quiet journey through space, orbiting Earth in a silent tribute to the early days of space exploration.