2023-08-18 23:00:00
Voyager 1. Courtesy of NASA The National Aeronautics and Space Administration (NASA) launched Voyager 1 and Voyager 2 in 1977. Voyager 1 and 2 were intended to explore Jupiter and Saturn for four years, but they are exploring space much longer than expected. Even today, 47 years after its launch, it continues to send various data as it travels farther and farther from the Earth at 60,000 km/h. Voyager 1 left a lot of data while exploring the vicinity of Jupiter and Saturn until 1989. They photographed Jupiter’s giant oval pattern, called the Great Red Spot, and the volcanic activity of Io, one of Jupiter’s moons. In 1990, he also took a picture of the Earth from 6 billion kilometers away. American astronomer Carl Sagan coined the name ‘Pale Blue Dot’ after seeing this picture in which the Earth appears faintly as a tiny dot. On August 25, 2012, Voyager 1 left the solar system and entered interstellar space, the space between stars outside the solar system for the first time as a human-made probe. It is more than 18 billion kilometers from the sun. Now, it takes more than 20 hours just to receive the data sent by Voyager 1 from Earth. NASA predicted, “If Voyager 1 runs out of power, the thermostats of various observation equipment will stop operating.” Researchers examining Voyager 1 before launch (left), and the image of Jupiter taken by Voyager 1 (right). Provided by NASA [이달의 과학사] Voyager 1 out of the solar system!
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