Science and Technology Daily, Beijing, November 4 (Reporter Liu Xia) According to the US Fun Science website recently, the National Aeronautics and Space Administration (NASA) "Lucy" (Lucy) mission is to study 7 different asteroids at a time. After successfully passing an important review, the task was officially timed and budgeted.
“Lucy” (Lucy) will be launched in October 2021 for a 12-year trip in the solar system. Along the way, it will visit a celestial body within the asteroid belt and six celestial bodies within the Trojan asteroids. The Trojan asteroid group is a large group of asteroids that orbit the Jupiter and run around the sun. "Lucy"; mission chief researcher Hal · Levison said: "In the past, this task has been on paper, and now we really start construction, ready to develop detectors. ”
“Lucy” was taken from the name of a fossil of Australopithecus afarensis discovered by scientists in Ethiopia in 1974. Gu Yu & quoquo; Lucy is a woman who lived 3.2 million years ago and is considered to be the first human to walk upright. It is the earliest ancestor of human beings.
This name also highlights the eager expectations of scientists. They hope that the study of these seven asteroids will further reveal the earliest "looks" of the solar system.
During the trip, “Lucy” will pass through many different places in the solar system. First, in 2025, it will dock on the asteroid belt between Mars and Jupiter, and then continue in the direction of Jupiter. In 2027— in 2033, "Lucy" will fly 6 asteroids, including 3 asteroids from different sub-categories and two asteroids that rotate each other.
If the "Lucy" launch is successful, it will become the latest member of the NASA asteroid detection family. Members of this family include the “dawn”, which has just finished the mission, explored Ceres and Vesta, and the just arrived at the asteroid “Bennu” (Bennu); source spectrum interpretation resource security weathering layer identification Detector & rdquo; (OSIRIS-Rex).